问题详情

Which of the following is true about the federal ban on semi-automatic assault guns？
A．It was one of Obama"s promises when he competed within his party.
B．It is still effective to limit the sale of semi-automatic assault guns.
C．It was the second time for the ban to be passed by Congress in 1994.
D．None of the Americans want to bring it back because it is too complex.请帮忙给出正确答案和分析，谢谢！