The technology used in a retail security system that uses VHF/microwave is an electronic:
Correct Answer: B
Electronic Article Surveillance (EAS) systems are commonly used in retail environments to prevent theft. These systems often use VHF, microwave, or other radio frequencies to detect tagged merchandise. When someone attempts to exit the store without deactivating the tag, the system sets off an alarm. A (Point-of-sale surveillance) involves video and transaction monitoring. C (Dual detector) refers to motion detection in security systems. D (Magnetometer) is used for metal detection, not retail theft prevention. References: PSP Study Guide - Retail Security Technologies POA Manual - EAS and Tag-Based Theft Deterrents
