All resulted in the issuing of the Emancipation Proclamation that increased Northern advantages in the Civil War except?

A: It repealed the Fugitive Slave Law, meaning that escaped slaves could join the Union's army.

B: It made the Confederacy reconsider its perspective on slavery.

C: The North gained 180,000 former slave and free black men that were not returned to the South.

D: It encouraged even more slaves to come to the Union and join the army.