多项选择题

A. It supports eight different data rates.
B. It is fully backward compatible with 802.11b
C. It provides the same network throughput with 802.11b clients, 802.11g clients, or a mixed  environment where both clients are present.
D. It is only compatibly with the 11 Mbps 802.11b transfer rate.
E. It has three non-overlapping channels in its channel options.