Swedish Retailer, IKEA, Understands That Prospective Customers Will Spend More

Swedish retailer, IKEA, understands that prospective customers will spend more time in store, browsing and comparing prices if they are not encumbered with children. Accordingly, all IKEA stores offer a children's play area that is fully supervised by qualified attendants at no charge to IKEA patrons. The children's play area is an example of:

A) experiential service.
B) supplementary service.
C) core service.
D) in- store merchandising.
E) primary service.