How did the Emancipation Proclamation have an effect on African American’s ability to serve in the Union army?

Responses
A As a result of the proclamation, African Americans were no longer drafted into service for the Civil War.As a result of the proclamation, African Americans were no longer drafted into service for the Civil War.
B As a result of the proclamation, the end of the war came quickly, so African Americans were not able to mobilize efforts to join the fight.As a result of the proclamation, the end of the war came quickly, so African Americans were not able to mobilize efforts to join the fight.
C As a result of the proclamation, African Americans were provided full citizenship rights, which included the ability to join the war effort.As a result of the proclamation, African Americans were provided full citizenship rights, which included the ability to join the war effort.
D As a result of the proclamation, tens of thousands of African Americans from the South flooded to areas controlled by the Union to join the Union army.

D As a result of the proclamation, tens of thousands of African Americans from the South flooded to areas controlled by the Union to join the Union army.