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

机电产品国际招标的投标价格调整包括供货范围调整、商务偏差调整、技术偏差调整等。一般按照约定的允许偏差项数和范围分别计算调整额，每项商务偏差调整最多不超过投标价格的( )。

A．1%

B．2%

C．3%

D．4%