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Which claim best responds to the writing prompt?

Writing prompt: In 1945, the United States dropped atomic bombs on the cities of Hiroshima and Nagasaki in Japan. Some historians say that these attacks ended the war. Other historians say that Japan would have surrendered anyway. Do you think the dropping of atomic bombs was justified? Support your reasoning.

A. Some historians think that millions more Americans and Japanese would have died had the United States invaded Japan instead of dropping the bombs.
B. There are arguments for and against the dropping of atomic bombs on Japan, and it is not clear if the United States was justified in using such weapons
C. The dropping of atomic bombs on Japan was justified because there was no guarantee that Japan would have surrendered otherwise
D. Over 200.000 Japanese people were likely killed because of the atomic bomb attacks on Hiroshima and Nagasaki, and many more were wounded​