C because when you do the quick maths the answer is c
Answer:
The Battle of Britain (German: die Luftschlacht um England, "the Air Battle for England") was a military campaign of the Second World War, in which the Royal Air Force (RAF) defended the United Kingdom (UK) against large-scale attacks by Nazi Germany's air force, the Luftwaffe.
It was Barack Obama. hope it helps
Great Britain, France and Russia were the allied powers in World War One.