Customers Have Their Groceries Scanned at the Supermarket Checkout Counter,the

customers have their groceries scanned at the supermarket checkout counter,the data are collected and processed by services such as SymphonyIRIGroup's (IRI) InfoScan.Consumer product firms like Proctor & Gamble use data collected by IRI to allocate scarce marketing resources.Which of the following data are not collected at retail checkout counters?

A) coupon redemptions
B) product bar codes
C) product sales
D) free sample redemptions
E) household demographics