The PDAs Used by Zara Staff Are Linked to the Store's

The PDAs used by Zara staff are linked to the store's point-of-sale system which shows:

A) data on the average footfall in the store over a period of time.
B) number of items bought by a customer for every item tried on.
C) the number of customers interviewed by each member of staff.
D) the average number of clothes sold for every customer visiting the store.
E) how garments rank by sales.