Herb,a Salesman for an Investment Company Knows the Most Effective

Herb,a salesman for an investment company knows the most effective tool for negotiating with customers is a well-developed value proposition.When he makes a sales presentation he reminds himself:

A) To always value the value proposition.
B) Anticipation enhances negotiations.
C) Say what you mean and mean what you say.
D) Listen and validate customer concerns.