Which of the Following Statements About Electronic Article Surveillance (EAS)

Which of the following statements about electronic article surveillance (EAS) systems is true?

A) Retailers can install the EAS tags more efficiently than vendors
B) EAS systems allow stores to display theft-prone, expensive merchandise outside of glass cases and still have it protected from shoplifters
C) Tags are deactivated when customers try on merchandise
D) It is easy to tell which stores are using EAS systems by the tags found on the store's merchandise
E) All of these statements about EAS systems are true