What is the best practice for setting the WLC v7.0 use of WLAN QoS settings to support SIP phones on a VoWLAN?

A.
Configure SIP with static CAC only with SIP call snooping.

B.
Configure SIP with static CAC only without SIP call snooping.

C.
Configure SIP with load-based CAC only with SIP call snooping.

D.
Configure SIP with load-based CAC only without SIP call snooping.

E.
Configure SIP with load-based CAC and TSPEC only with SIP call snooping.