Although Tom agreed with her on most points, here was one     he was unwilling to give in.

A．on which

B．in which

C．to which

D．with which

82美元/英斗价格买入53000英斗小麦，并同时以7.05美元/英斗卖出 10手期货合约，每手5000英斗。三个月后，以5.90美元/英斗卖出小麦，并以7.03美元/英斗在期货市场平仓，则贸易商的交易结果是( )。

A．获利5240美元

B．获利5300美元

C．亏损5240美元

D．亏损5300美元