Refer to the exhibit. In this controller redundancy scenario, how many AP licenses are needed in this HA design?
a) 50 each for WLC-A, WLC-B, WLC-AB, and WLC-BB
b) 100 for WLC-A and 100 for WLC-B
c) 100 each for WLC-A, WLC-B, WLC-AB, and WLC-BB
d) 200 for WLC-A and 200 for WLC-B