802.11g 可以支持的速率有哪些？

单选题 (2 分) 2分
A.
1,2,5.5,11&6,9,12,18,24,30,36,48,54 Mbps

B.
6,9,12,18,24,36,48,54 Mbps

C.
1,2,5.5,11&6,9,12,18,24,36,48,54 Mbps

D.
6,9,12,18,24,30,36,48,54 Mbps