What Was the Role of African Americans in the Revolution

What was the role of African Americans in the revolution?

A) As the war dragged on, blacks-especially northern free blacks-were increasingly welcome to enlist.
B) Americans generally avoided arming blacks, but the British eagerly recruited runaway slaves.
C) Though still enslaved, they rallied around the revolutionary rhetoric of freedom, uniformly supporting the American cause.
D) Very few slaves escaped to freedom; those who did found themselves welcomed in the North, the West Indies, or Canada.