Ending in February 1943, the Battle of Stalingrad

Ending in February 1943, the Battle of Stalingrad:

A) Resulted in the deposition of Joseph Stalin and his exile to the United States.
B) Marked the turning point in the European war, with a Soviet victory.
C) Allowed the Germans to focus their attention on expanding into Central and South Asia.
D) Resulted in an Allied victory, with a large deployment of American troops coming to the aid of the Soviets to relieve the siege.