By Examining Checkout Data,supermarkets Have Learned That People Who Are

Multiple Choice

By examining checkout data,supermarkets have learned that people who are buying non-alcoholic beer typically also buy a bag of salty snacks. As a result of this finding,supermarkets often place displays of non-alcoholic beer near the chips and pretzel aisle. Which of the following activities would help supermarkets with this strategy?

A) optical scanning  
B) electronic data interchange  
C) bar coding  
D) data mining