The daylight bombing of September 7th 1940 was never repeated on the same scale. Fighter Command made sure its defenses prevented any Luftwaffe daytime attacks. During the hours of bombing that day, over 300 tons of high explosives and thousands of incendiaries had fallen. London was burning, and that evening 247 bombers returned. On the morning of September 8th, over 500 Londoners had been killed and nearly 1400 seriously injured. But when did the "Blitz" officially end?
A. March 23rd 1941
B. February 12th 1941
C. January 19th 1941
D. May 10th 1941