Which actions by the Belgian government contributed to the ethnic tension in Rwanda? A. They supported a revolt by black Africans over Arab Muslims. B. They encouraged white supremacy over black Africans under the system of apartheid. C. They promoted a Hutu minority over a Tutsi majority and encouraged a Hutu revolt. D. They promoted a Tutsi minority over a Hutu majority and encouraged a Tutsi revolt. Please select the best answer from the choices provided A B C D.