Which of the following is NOT the background information of a possible attack on Iran？A．US

Which of the following is NOT the background information of a possible attack on Iran？

A．US president is going to pay a visit to Benjamin Netanyahu.

B．Iran seems getting progress on a nuclear bomb.

C．There"s a presidential election in America.

D．It looks likely that Iran will retaliate if attacked.

请帮忙给出正确答案和分析，谢谢！