金融期权交易中进行流通转让的对象是( )。

A．金融期货

B．金融期权合约

C．金融衍生工具

D．金融期货合约

Everything in the house was shaking and it seemed that the world was ____. [ ]

A. by the end

B. in the end

C. at the end

D. at an end