A wireless client cannot connect to an 802.11b/g BSS with a b/g wireless carD.The client section of the access point does not list any active WLAN clients. What is a possible reason for this?（）

• A、The incorrect channel is configured on the client.
• B、The client's IP address is on the wrong subnet.
• C、The client has an incorrect pre-shared key.
• D、The SSID is configured incorrectly on the client.