Recently, Mr. Johnson, together with five other men, __________ one of the lifeboats, and sailed

800 miles to the island, where there is a lake with rich fresh water.[ ]

A. have been to

B. has been to

C. has taken

D. have taken

某银行2009年初关注类贷款余额为4000亿元，其中在2009年末转为次级类、可疑类、损失类的贷款金额之和为600亿元，期初关注类贷款期间因回收减少了500亿元，则关注类贷款迁徙率为( )。

A．12.5%
B．15%
C．17.1%
D．11.3%