CompTIA Security+ Question C-85

An administrator has concerns regarding the company’s server rooms Proximity badge readers were installed, but it is discovered this is not preventing unapproved personnel from tailgating into these area. Which of the following would BEST address this concern?

A. Replace proximity readers with turn0based key locks
B. Install man-traps at each restricted area entrance
C. Configure alarms to alert security when the areas are accessed
D. Install monitoring cameras at each entrance

Answer: B