When your wireless client device roams from one AP to another on the same network, which IEEE protocol can be used to authenticate the clients faster?

When your wireless client device roams from one AP to another on the same network, which IEEE protocol can be used to authenticate the clients faster?
A . 802.11r also called Assisted Roaming
B . 802.11k also called Assisted Roaming
C . 802.11r also called Fast BSS Transition
D . 802.11k also called Predictive Based Roaming
E . 802.11r also called Predictive Based Roaming
F . 802.11k also called Fast BSS Transition

Answer: C

Explanation:

From: