The correct options are
B Germans
C British
In 1886, all the regions under the Sultan of Zanzibar were divided among the British and the Germans. Initially, the British East India Company had the authority and administered the regions in East Africa. But, in 1895, the British government took up the authority from the company and formed the East African Protectorate. The Germans established their rule in the regions given to them. It came to be known as German East Africa.