An 802.11b telephone is receiving an audio signal from an access point, but cannot send audio. What is a possible cause?

A.
The RSSI value on the telephone is greater than 35.

B.
The access point is set to receive only at 802.11g data rates.

C.
The security settings in the telephone do not match the settings in the access point.

D.
The transmit power in the telephone is significantly lower than the transmit power in the access point.