After the Peninsula Campaign, Union Strategy Included All of the Following

After the Peninsula Campaign, Union strategy included all of the following EXCEPT

A) cutting the Confederacy in half by seizing the Mississippi River.
B) marching through Georgia and then the Carolinas.
C) blockading the Confederacy's coastline.
D) liberating the slaves to undermine the southern economy.
E) striking deep into the Confederacy via the Appalachian Mountain chain.