Which two items does the Cisco CRS 4.5 Installer always install on the system?（）

A.database integration  
B.prompt and collect  
C.VoiceXML  
D.opening and parsing HTTP and XML documents  
E.PQ  
F.E-mail Queuing 

A.the agent who has been in the Available state for the longest amount of time  
B.the next available agent with the highest priority, as determined by the agent order in the Resources list
C.the next available agent, based on the last agent selected and the agent order in the Resources list  
D.the agent assigned to the selected Resource Group and is thus qualified to be selected

A.System Parameters Configuration  
B.Cisco Unified CallManager Cluster Status  
C.Date, Time, and Reason of Last Failure  
D.Cisco CRS License Information  
E.Cisco CRS Datastore Replication Status  
F.Cisco CRS Component Activation