In relation to the winding-up of a company:

(b) Explain the following:‘The major difference between a voluntary winding-up and an involuntary winding-up lies in the extent of the involvement of creditors, contributories and the court.’ (6 marks)

下面关于期权和期权交易的说法正确的是( )。

A．期权交易就是对选择权的买卖

B．金融期权是指以金融工具或金融变量为基础工具的期权交易形式

C．期权的买方以支付期权费为代价而拥有选择权，同时承担必须买进或卖出的义务

D．期权的卖方在收取了期权费后，在一定期限内必须无条件服从买方的选择