单项选择题
A.you should consider having the maintenance schedule of king database changed for the retention and removal of message items.
B.you should consider having the messaging record management (mrm) schedule for-ex01 changed for the retention and removal of message items.
C.you should consider having the set-retention policy cmdlet run to schedule the retention and removal of message items.
D.you should consider having the start-managed folder assistant cmdlet run to schedule the retention and removal of message items.