The Ferrante Company Sells Custom Music Mixes to Retail Stores

The Ferrante Company sells custom music mixes to retail stores that need to create a specific mood and increase sales with music.Ferrante's major innovation is the ability to track sales activity by song but also by mix of songs to track what songs led to a purchase.They can also track the movement and activities of customers within the store when customers use shopping carts or baskets equipped with special sensors and associate customer movement and behavior with the songs playing.
Jeff Baliyut,a sales representative with Ferrante,is meeting with the merchandising director of a major retail chain selling mid-market kitchen accessories and specialty foods.
-Why is the ability to track purchases by song mix so important for Ferrante's clients?

A) Ferrante sells cheaper custom mixes than standard soundtracks available from other vendors.
B) It allows the clients to shape the store brand with music.
C) It gives them information on their competitors.
D) It allows them to increase sales by playing the songs that stimulate their customers to buy.
E) It requires them to play certain songs no more than a few times in a shift.