—Did you have a good time at the party.

—Yes, we enjoyed _______ very much [ ]

A. ourselves

B. myself

C. yourself

D. yourselves

投资者用于期货交易的出入金只能通过投资者的银行结算账户和期货公司期货保证金账户以（）形式办理。

A、转账

B、现金

C、转账和现金

D、无具体规定