What would be the most appropriate interior sensor used for a building that has windows along the ground floor?

What would be the most appropriate interior sensor used for a building that has windows along the ground floor?

A.
infrared glass-break sensor

B.
ultrasonic glass-break sensors

C.
acoustic/shock glass-break sensors

D.
volumetric sensors

Explanation:
C: Glass-break sensors are a good intrusion detection device for buildings with a lot of glass windows and doors with glass panes. The use of dual-technology glass break sensorsacoustic and shock waveis most effective. The reason is that if only acoustic is used and an employee pulls the window blinds up, it can set off a false alarm; but if it is set to a dual-alarm system both acoustic and shock sensors will need to be activated before an alarm is triggered. Page 639.