Which is NOT considered a physical intrusion detection method?

A.
Wave pattern motion detector

B.
Audio motion detector

C.
Photoelectric sensor

D.
Line supervision

Explanation:
Line supervision is the monitoring of the
alarm signaling transmission medium to detect tampering. Audio
detectors monitor a room for any abnormal sound wave generation.
Photoelectric sensors receive a beam of light from a light-emitting
device. Wave pattern motion detectors generate a wave pattern and
send an alarm if the pattern is disturbed.