小明今年8岁,爷爷今年72岁,爷爷的年龄是小明的请选择ABC1`:m(z7V:T/U2d'V)h'M.q倍。)k7}.M(c8y7c
A、6倍)k7}.M(c8y7c
B、8倍)k7}.M(c8y7c
C、9倍)k7}.M(c8y7c