Up to now, thousands of red phone boxes, the old image of Britain, ______ due to  mobile phones.

A．removed

B．have removed

C．were removed

D．have been removed

根据国际货币基金协定第八条款规定，其货币部分可兑换的概念主要是指( )。

A．货币对内可兑换

B．贸易项目可兑换

C．经常项目可兑换

D．资本项目可兑换