A call center handles inquiries into billing issues for multiple medical facilities. A security analyst notices that call center agents often walk away from their workstations, leaving patient data visible for anyone to see. Which of the following should a network administrator do to BEST prevent data theft within the call center?


A. Encrypt the workstation hard drives.
B. Lock the workstations after five minutes of inactivity.
C. Install privacy screens.
D. Log off the users when their workstations are not in use.