— Jenny took the 8:00 bus to Guangzhou this morning.

— Really? He _____ the 9:00 train. It's much more comfortable and safer to travel by train. [ ]

A. could have taken

B. should take

C. must have taken

D. can take

下列关于项目式管理组织特点的叙述中，不正确的是( )。

A．上级对下级的管理需通过职能机构完成

B．管理水平取决于个人水平

C．部门与人员责权明确

D．相同的岗位重复设置，造成资源浪费