Whose duty is it to examine and verify the vessel’s classification and technical state and condition?（）.

A.Tallyman's

B.Marine surveyor's

C.Cargo surveyor's

D.Boarding inspector's

扑救医院火灾，应向知情人了解起火部位被困人员燃爆及有毒物品贵重设备和重要资料受火势威胁的程度，以及单位自救情况。