Susan has discovered that the smart card-based locks used to keep the facility she works at secure are not effective because staff members are propping the doors open. She places signs on the doors reminding staff that leaving the door open creates a security issue, and she adds alarms that will sound if the doors are left open for more than five minutes. What type of controls has she put into place?

A. Physical
B. Administrative
C. Compensation
D. Recovery

Answer: C. Compensation