Why is the Allied invasion of France primarily considered to be a significant turning point of World War II?

A. It broke Germany's control and marked the beginning of the Nazis'
retreat in Western Europe.
B. It destroyed Germany's largest army, forcing Germany to pull
troops out of the Soviet Union.
C. It resulted in significant Allied losses that delayed the invasion of
Western Europe.
D. It diverted German forces to France, allowing Allies to take control
of Italy.

A. It broke Germany's control and marked the beginning of the Nazis' retreat in Western Europe.