甲、乙签订买卖合同后，甲向乙背书转让10万元的汇票作为价款。后乙又将该汇票背书转让给丙。如果在乙履行合同不符合规定后，经甲、乙协议，将该合同解除。甲的下列行为中，符合票据法律制度规定的是( )。

A．请求乙返还汇票

B．请求乙返还10万元价款

C．请求丙返还汇票

D．请求付款人停止支付汇票上的款项

You        that late last night. It was harmful to your health.  [ ]

A. mustn't have worked          

B. shouldn't have worked

C. can't have worked            

D. mightn't have worked