During the First Two Years of His Presidency,what Was a Facet

During the first two years of his presidency,what was a facet of Abraham Lincoln's slavery policy?

A) He said slavery was the impetus for the Civil War.
B) He experimented with the colonization of freed slaves near Haiti.
C) He urged Union commanders to start emancipating slaves immediately.
D) He said there should be no compensation of slaveowners in Union states like Missouri.
E) He urged a constitutional amendment to abolish slavery immediately.