A life raft which has inflated bottom-up on the water（）.

A.should be righted by standing on the carbon dioxide cylinder, holding the righting straps, and leaning backwards

B.should be righted by standing on the life line, holding the righting straps, and leaning backwards

C.will right itself when the canopy tubes inflate

D.must be cleared of the buoyant equipment before it will right itself

已知a＝00101010B和b＝40D，下列关系式成立的是______。

A．a>b

B．a＝b

C．a

D．不能比较