PART A: Which statement identifies the central idea of the text? A. African Americans who served in the Civil War were treated differently than white soldiers. B. Frederick Douglass encouraged African Americans to serve in the Union military so they could be granted citizenship. C. The Confederate Army treated African Americans soldiers in the Union Army harshly to discourage slaves from escaping to the North. D. African Americans made up a relatively small amount of Civil War soldiers, making their impact small.