Using Beacons, Retailers Are Doing All of This Except

Using beacons, retailers are doing all of this except:

A) n oting a customer's proximity to the store, and perhaps offering promotions.
B) customers choose their products online, and they are ready in the store for pickup.
C) customers choose products online, and receive information about where to find them.
D) c ustomers can check out using their phones upon leaving the store.
E) as the customer leaves the store, a parking valet brings the customer's car to the door.