What is the primary reason that Arthur Compton disagrees with the writers of the Oak Ridge Petition?

Compton argued that avoiding the bomb could prolong the war and lead to a costly invasion of Japan, causing greater American loss of life. That is why he disagreed with the petitioners’ call not to use the bomb. Choice A gives his main concern; the issue was not that the bombs could not make an effective demonstration or that an international agreement had outlawed them.

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