Chris roCk wAs piCkED out to host this yEAr's osCArs mAinly BECAusE _______.
A．hE usED to BE An osCAr winnEr.
B．hE hAs hostED osCArs mAny timEs BEForE.
C．hE is A supEr FAn oF hip-hop musiC.
D．hE hAs A shArp tonguE AnD rAw lAnguAgE in stAnD-up ComEDy routinEs.