For What Reason Were African American Troops,known as Buffalo Soldiers,serving

Multiple Choice

For what reason were African American troops,known as Buffalo soldiers,serving in the West during the Indian Wars?

A) The first black regiment to come west originated in Buffalo,New York.
B) Native Americans thought their hair resembled that of the bison.
C) They were as scarce as the buffalo on the Great Plains of the late 1800s.
D) They were the soldiers primarily responsible for the extinction of buffalo herds.