Which of the following is not tribal community of Africa?

Which of the following is not tribal community of Africa?

A. Zulu
B. Maasai
C. San Bushmen
D. Lepcha

The Lepcha are also called the Rongkup meaning the children of God and the Rong, Mútuncí Róngkup Rumkup, and Rongpa, are among the indigenous peoples of Sikkim, India and Nepal, and number around 80,000.
Zulu people, are a Bantu ethnic group of Southern Africa. The Zulu people are the largest ethnic group and nation in South Africa with an estimated 10–12 million people living mainly in the province of KwaZulu-Natal. They originated from Nguni communities who took part in the Bantu migrations.
The Maasai are a Nilotic ethnic group inhabiting northern, central and southern Kenya and northern Tanzania. They are among the best known local populations internationally due to their residence near the many game parks of the African Great Lakes, and their distinctive customs and dress.
San, also called (pejorative) Bushmen, an indigenous people of southern Africa, related to the Khoekhoe (Khoikhoi). They live chiefly in Botswana, Namibia, and southeastern Angola.