Which starting prefix debug command can help determine a combination of discovery/join and DHCP process status?

A Cisco WLC v7.0 is not seeing an AP join. Which starting prefix debug command can help determine a combination of discovery/join and DHCP process status?

A.
debug capwap events – from Cisco WLC

B.
debug capwap events – from the AP

C.
debug ip udp – from Cisco WLC

D.
debug ip udp – from the AP