Which is not a drawback to installing intrusion detection and monitoring systems?

A.
It�s expensive to install.

B.
It cannot be penetrated.

C.
It requires human response.

D.
It�s subject to false alarms.

Explanation:
B: Monitoring and intrusion detection systems are expensive, require someone to respond when they set off an alarm, and, because of their level of sensitivity, can cause several false alarms. Like any other type of technology or device, they have their own vulnerabilities that can be exploited and penetrated.