Six Weeks Ago,a Young Couple Paid $3500 for a Top-Brand

Six weeks ago,a young couple paid $3500 for a top-brand mattress for their bed.Last night,a customer service representative of the manufacturer of the mattress called them to thank them for buying the mattress and to ask if they were happy with it.Why would a manufacturer bother to make such a call?

A) To motivate them to buy another mattress.
B) To satisfy legal requirements.
C) To counter any negative publicity that they might someday hear about the mattress and / or its manufacturer.
D) To reduce any post-purchase dissonance.
E) To make sure it remained in their consideration set.