How did the status of African Americans in the military change during the Civil WarA. African Americans were enlisted as Union soldiers, but they could only serve as officers in mixed-race regiments.B. African Americans were first used as soldiers, but they were gradually moved to labor jobs digging trenches.C. African Americans were first excluded from all military jobs, but they were eventually allowed to serve only as laborers.D. African Americans were not accepted as soldiers at the beginning of the war, but made up 10 percent of Union forces by the war’s end.