Which of the following best exemplifies how the Battle of Gettysburg was a turning point in the Civil War for the Union?

A. The Confederacy did not launch another invasion of the North after the battle.
B. General Lee's loss at Gettysburg led to his being removed from command.
C. General Lee's army regrouped and began planning attacks on Washington, D.C
i think its b.

General Lee's loss at Gettysburg led to his being removed from command.