ABC Company has implemented a WLAN controller, lightweight APs, and applications that require fast handoffs. What feature, when supported by the WLAN controller and client devices, will allow client devices to make fast BSS transitions?

A.
Asynchronous Key Forwarding

B.
Opportunistic PMK Caching

C.
LWAPP Fast Roaming

D.
Over-the-air Client Provisioning

E.
PTK Key Hashing