A firm should offer good customer service for all of the following reasons except: a) The cost of finding a new customer is considerably greater than the cost of keeping one you already have. b) Customer service is a mandatory requirement on all products and services offered in the country. c) Good service, which includes good human relations, is the main reason for repeat business. d) The average disgruntled customer tells at least 8 to 10 people about the unpleasant experience thus hampering future prospects.