Susan Belcourt's Company Advertises Widely

Susan Belcourt's company advertises widely. In each magazine ad, a business reply card is attached. Ms. Belcourt uses these cards to build her company's database. In which of the following ways would Ms. Belcourt most likely be using the newly constructed database?

A) to avoid serious customer mistakes
B) to determine if up-selling is appropriate
C) to reactivate customer purchases
D) to deepen customer loyalty
E) to identify prospects