I think its B. The US and Britain were close allies during this time. Also, they were extremely suspicious of German intentions, since the sinking of Lusitania and the Zimmerman note was caused by them.
The land was cheap. Ownership of land was best at this place. You can also start businesses. Elsewhere were too expensive and crowded
A is the correct answer.
The Allies declared after the Potsdam Summit that the only surrender they would accept from the Axis powers was an unconditional surrender, that is, one without any conditions attached it to be the surrendering party.
Truman was fully briefed about Japan's resolve and had to weigh that in deciding where and how to force Japan into an unconditional surrender. If they had not dropped the bomb, preparations were being made to land an invasion force.