AP A is in AP group ONE and AP B in is AP group TWO. AP group ONE assigns the interface Marketing to the corporate WLAN, whereas AP group TWO assigns the interface Sales to the same WLAN. What happens if a client roams from AP A to AP B while connected to the corporate SSID? 

Answer options:

A. No roaming is possible.
B. The client will reconnect with a new IP address from the Sales subnet.
C. The client will keep its Marketing subnet IP address, but roaming will not be seamless.
D. The client will keep its Marketing subnet IP address, and roaming will be seamless if the appropriate key management is used.
E. A mobility tunnel will be established between the two APs, and the client will be allowed to keep its IP address.

D