Our team’s success was ________ the efforts of Mr. Mark, who is ________ arrive here in ten minutes.

A．because; due to

B．because of; about to

C．due to; due to

D．as a result; going to

关于保证，下列说法正确的是()

A.银行与借款人协商变更借款合同时，可不告知保证人

B.未经保证人同意，展期后的贷款，保证人可不承担保证责任

C.事前如有约定的，银行对借款人有关合同的修改可不通知保证人

D.银行对借款合同的修改都应取得保证人口头或书面意见