Which of the following BEST describes the American strategy for the atomic bomb as explained in the Manhattan Project Notebook?

A.
to target army, navy, and air force bases throughout the country

B.
to target cities of key importance to the Japanese military and industry

C.
to target only military personnel and figures of key strategic importance

D.
to target only cities with industrial production above a certain threshold

B. to target cities of key importance to the Japanese military and industry.