The development of a personal$-$selling philosophy involves three prescriptions: $q,$

A$.$ majoring in sales or marketing, adopting the marketing concept, and becoming a problem solver and partner to help customers make informed buying decisions

B$.$ develop itg the ability to convince others to buy your product or service, learning the ability to effectively close deals, and ensuring the achievement of sales goals

C$.$ adopting $q,$ keting concept, valuing personal selling, and assuming the role of problem solver and partner to help customers make informed buying decisions

D$.$ having an outgoing personality, convincing others to buy your products or services, and being able to consistently close the deal

E$.$ adopting the marketing concept, achieving sales goals, and telling the customer what they need to buy