某建设工程项目施工中，项目经理准备将部分工人安置在底层设有仓库的建筑物内，则下列说法中符合法律规定的是 。

A．因为底层是仓库，所以不得用作工人集体宿舍

B．经公安消防机构批准，可以安排员工集体宿舍

C．可以临时安置员工集体宿舍，但应尽快解决

D．只要员工不反对，就可以将其安排为工人集体宿舍

Which statement about the Flinders bar of the magnetic compass is CORRECT（）.

A.It compensates for the error caused by the vertical component of the Earth's magnetic field

B.It compensates for error caused by the heeling of a vessel

C.It compensates for quadrantal deviation

D.It is only needed in equatorial waters