What is the default value for the Drop Ad Hoc Conference service parameter?

A.
Never

B.
When No On-Net Parties Remain in the Conference

C.
When No Off-Net Parties Remain in the Conference

D.
Drop Ad Hoc Conference When Creator Leaves

Explanation:
System – Service Parameters – Server x.x.x.x – Service – Cisco CallManager (Active) – Clusterwide Parameters (Feature – Conference) – Drop Ad Hoc Conference – Never (default)