Walgreens Customers Can Sign Up for the Balance Rewards Program,entering

Walgreens customers can sign up for the Balance Rewards program,entering a member number or using a member card every time they make a Walgreens purchase in order to receive discounts and build up points that can be redeemed for rewards.Information that Walgreens collects through these purchases is best described as ________.

A) scanner data
B) reality mining
C) unstructured data
D) sentiment analysis
E) data mining