A Sales Clerk at an Electronics Store Scanned the Bar

Multiple Choice

A sales clerk at an electronics store scanned the bar code for a low cost set of headphones and then substituted a high cost set of headphones for his friend,who paid the lower price.Which of the following controls would help to prevent this sort of fraud?

A) RFID
B) Physical inventory checking
C) Segregation of duties
D) An electronic lockbox