Laser Scanning of Universal Product Codes at Retail Checkout Counters

Multiple Choice

Laser scanning of universal product codes at retail checkout counters provides which of the following advantages?
I.Increased speed and accuracy at checkout
II.Continuous information on inventories
III.Improved levels of customer service
IV.Elimination of periodic counting of inventory

A) I, II, and IV only
B) II, III, and IV only
C) I, II, and III only
D) I, III, and IV only
E) I, II, III, and IV