What is a possible source of this problem?

A new wireless client is configured to join a 802.11 network. This client uses the same hardware and software as many of the other clients on the network. The client can see the network, but cannot connect. A wireless packet sniffer shows that the Wireless Access Point (WAP) is not responding to the association requests being sent by the wireless client.

What is a possible source of this problem?
A . The WAP does not recognize the client’s MAC address
B . The client cannot see the SSID of the wireless network
C . Client is configured for the wrong channel
D . The wireless client is not configured to use DHCP

Answer: A