Relationship Marketing Provides Several Benefits for Service Customers, Including: (1)

Relationship marketing provides several benefits for service customers, including: (1) the continuity of a single provider, (2) customized service delivery, (3) reduced stress due to a repetitive purchase process, and (4) __________.

A) no need for comparison shopping
B) implied warranties
C) discounted switching costs
D) an absence of switching costs
E) strict government quality performance guidelines