债券发行人确定债券期限不需要考虑的因素是( )。

A．资金使用方向

B．债券的票面金额

C．市场利率变化

D．债券变现能力

——Why are the tax collectors so busy?

——Many people prefer to have their tax forms completed by a professional rather than ___.

A．do it themselves

B．doing it themselves

C．to do it themselves

D．done by themselves