Tristan is a salesperson who has been in charge of the Dragos Textile Company account for years. He handles all of Dragos' orders and quickly resolves any issues that may come up. On occasion, Tristan takes some of the company employees out to dinner and has even given them tickets to local sporting events. Tristan is involved ina) relationship selling.b) multi-level marketing.c) publicity.d) public relations.e) loyalty selling.