Myer, a Leading Australian Department Store, Knows That for Every

Myer, a leading Australian department store, knows that for every $50 voucher given, $125 of sales result. As such Myer heavily promotes its gift vouchers in the expectation that gift recipients will be drawn into the store and make a substantial purchase. Myer gathers this kind of information through its:

A) Myer One loyalty scheme
B) point-of-sale.
C) marketing information system.
D) sales force.
E) primary data.