若a=-2×3²，b=（-2×3）²，c=-（2×3）²，则下列大小关系中正确的是[ ]

A.a＞b＞0

B.b＞c＞a

C.b＞a＞c

D.c＞a＞b

---What_______ your father do?        --- He is a teacher.

A．do

B．does

C．is

D．are