*PLEASE ANSWER, ITS CONFUSING* What was the significance of the battle at Fort Wagner?

a.) The special skills applied by an all-female unit challenged the assumption that women could not be useful agents of war.

b.) The mettle showed by African-American troops demonstrated that race was not a significant factor in a soldier's capability or courage.

c.) African-American soldiers led the charge, eager to fight, but were stopped and turned by back by white soldiers.