Which three of the following are valid CRS deployment scenarios? (Choose three.)

A.
High Availability CRS Engines running on hardware from different server classes

B.
High Availability CRS Engines running on similar hardware from the same server class but from different vendors

C.
High Availability CRS Engines and four simplex VoIP Monitoring Servers

D.
CCM co-resident deployment on an MCS 7815

Explanation: