Namibia, formerly known as South West Africa, was under the administration of South Africa for much of the 20th century following a League of Nations mandate. It gained independence in 1990. Although the source text contains a contradictory reference to option A, the correct answer is B, which is historically accurate.

The administrative structure of the Punjab province is divided into various districts for governance purposes. As per the standard administrative records used in official documentation and academic geography, the province is divided into 36 districts. This division facilitates the management of local government, law enforcement, and public service delivery across the most populous province of Pakistan.

Balochistan is the largest province of Pakistan by land area and is divided into several administrative districts. Based on official administrative records, the province comprises 32 districts, which serve as the primary units for local governance and administration in the region.

The Istana Merdeka, which translates to 'Independence Palace,' is one of the six presidential palaces located in Indonesia. It is situated in the capital city of Jakarta and serves as the official residence and workplace of the President of the Republic of Indonesia, hosting important state ceremonies and official government functions.

South Sudan officially became an independent sovereign state on July 9, 2011. This followed a successful independence referendum held in January 2011, where the vast majority of the population voted to secede from the Republic of the Sudan. The independence marked the end of a long-standing civil conflict and established the nation as the newest member of the international community at that time.

The capital of Chad is N'Djamena, not Bangui. Bangui is the capital city of the Central African Republic. Therefore, the pairing of Chad and Bangui is factually incorrect, making it the correct choice for this question.

Port of Spain is the capital city of the Republic of Trinidad and Tobago. It serves as the nation's primary administrative, financial, and cultural hub. Despite its name, it is not located in Spain, nor is it a port belonging to the Spanish nation. It is situated on the Gulf of Paria on the northwestern coast of the island of Trinidad.

SUNA stands for the Sudan News Agency. It serves as the official state-run news agency for the Republic of the Sudan, responsible for disseminating national and international news regarding the country's political, social, and economic developments to the public and global media outlets.

BTA, or the Bulgarian Telegraph Agency, is the national news agency of Bulgaria. It was founded in 1898 and serves as the primary source of information for the country's media outlets. It provides comprehensive coverage of political, economic, and social news from within Bulgaria and maintains a network of correspondents to report on international affairs relevant to the Bulgarian public.

The Haitian gourde is the official currency of the Republic of Haiti. The capital and largest city of Haiti is Port-au-Prince. Located on the Gulf of Gonâve, the city serves as the country's primary economic, political, and cultural hub. It is the center of government and the main port for international trade in the nation.