in an attempt to attract customers, service marketers often promise great results and satisfaction to customers, but marketers should be careful not to a. promise too much and cause customer expectations beyond what they can deliver. b. make the quality of their services too tangible in the eyes of the customer. c. make the appearance of their facilities consistent with their promises to customers. d. promise less than they can actually deliver and keep customers away. e. deliver on these promises and risk financial losses and the success of the company.