Once the Enterprise Service Policy has been enabled, which of the following two things can be controlled by a system administrator? (Choose two.) | Blackberry

A. The range of PIN numbers that can be activated on the BlackBerry Enterprise Server
B. The BlackBerry device models that can be activated on the BlackBerry Enterprise Server
C. The range of IMEI numbers that can be activated on the BlackBerry Enterprise Server
D. The specific time frame in which the BlackBerry device users can be activated on the BlackBerry
Enterprise Server
E. A specific user service provider that can be activated on the BlackBerry Enterprise Server

Answer: A,B