Many wives work outside their home because they ______.

A．want to be independent

B．don't want to stay at home

C．don't have to take care of their children

D．want to make money for their home

某市公安局购买了1辆丰田吉普车，因安全和保密工作的需要，准予核发武警部队车辆牌照和行驶证，该车应免征车辆购置税。