Which design element is a best practice when deploying an 802.11b wireless infrastructure?

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A、allocation nonoverlapping channels to access points that are in close physical proximity to one another
B、disabling TCP so that access points can negotiate signal levels with their attached wireless devices
C、configuring access points to provide clients with a maximum of 5 Mbps
D、setting the maximum data rate to 54 Mbps on the Cisco Wireless L AN Controller