Which three factors should an Administrator take into account when determining the required VDP appliance size and number of appliances? (Choose three.)

Which three factors should an Administrator take into account when determining the required VDP appliance size and number of appliances? (Choose three.)
A . retention periods (daily, weekly, monthly, yearly)
B . VMs guest OS family and version
C . typical change rate
D . Number and type (database, file system) of VMs

Answer: A,C,D