During the Civil War,black Soldiers

During the Civil War,black soldiers:

A) did nothing to dispel racial prejudice with their performance.
B) were mostly northern-born free blacks.
C) performed the same duties as white soldiers from the outset,but at lower pay.
D) helped inspire Republicans to believe that emancipation also demanded equal rights before the law.
E) were allowed into the Union army only in the last year of the war.