Mountain Express Is a Company That Provides Grocery Delivery Service

Mountain Express is a company that provides grocery delivery service to several small communities in Idaho.The company gives a 2 percent discount on all food orders to customers after they have used the service ten times.An additional percentage discount is offered for each additional 15 orders up to a maximum of 8 percent.The relationship marketing strategy used by Mountain Express is based on:

A) following service delivery paradigms.
B) building social bonds.
C) building financial bonds.
D) opening personal communication channels.
E) creating structural bonds.