PLEASE HELP ME! What bold step did a mathematician named Miriam Mann take at Langley to fight against racial discrimination?

A. She demanded that NACA hire Dorothy Vaughan.

B. She protested the fact that African American employees at Langley had to ride in the back of the bus.

C. She went to work in the all-white East Area Computing office.

D. She repeatedly removed a sign that indicated where all of the African American women had to eat in the cafeteria.