President Andrew Johnson had long wanted to dismiss the Secretary of War, Edwin M. Stanton. Stanton was the only member of Johnson's cabinet who supported the Radical Republicans' program for reconstruction. On August 12, Johnson suspended Stanton. In his place, Johnson appointed the popular General Ulysses S. Grant Secretary of War.
Congress overruled Stanton's suspension and Grant resigned his position.
Ignoring Congress, Johnson formally dismissed Stanton on February 21, 1868
your answer is B) hope this helps
In the eastern part of the confederacy, the Army of the Protomac met with mixed success. The Union Army failed to capture Richmond and won at Antietam only because the Confederates withdrew from the field first. In the western part of the Confederacy, the Army of the West won the Battle of Shiloh, and the Union navy captured New Orleans and Memphis.