What Was the Outcome of the Battle of Shiloh

What was the outcome of the Battle of Shiloh?

A) The Union won a great naval victory that proved to be a terrible setback to the southern economy, giving the Union control of many cotton plantations and liberating tens of thousands of slaves.
B) A Union victory after sending reinforcements to fight General Braxton Bragg's army helped secure Union control of Kentucky for the rest of the war.
C) The Union made a remarkable comeback under Grant's leadership after seeming defeat, but it was the costliest battle Americans had engaged in up to that point.
D) A major Confederate victory ensured that the South would take control of the area east of the Appalachians and that war would now turn to fighting in the West.
E) The Confederates tried out new military tactics that resulted in the lowest number of casualties in any Civil War battle so far.