How did US pilots contribute to the Allied war effort in Europe during World War II?

AThey carried out countless bombing raids on targets in Germany.
BThey sank ships carrying supplies to Britain and the Soviet Union.
CThey trained British pilots in effective air support techniques.
DThey ferried retreating troops between Europe and Great Britain.

Verified Answer :

The answer is: C. They trained British pilots in effective air support techniques. This was the United States pilots contribution to the Allied war effort in Europe during World War II. Officially, the British flight studentsĀ arrived in June 1941.

A. They carried out countless bombing raids on targets in Germany