After interviewing a customer to understand wireless client requirements, you determine that 802.11b must be enabled to support legacy clients within a mixed- mode environment. Which recommendation will have the greatest impact on mitigating the effects of 802.11b clients on the rest of the network? 

Answer options:

A. Restrict OFDM modulation from being used.
B. Make 11 Mb/s the lowest mandatory rate.
C. Enable a separate SSID for 802.11b clients.
D. Enable a short preamble.

B