Naren Knows That He Needs to Ask a Series of Questions

Naren knows that he needs to ask a series of questions early in his sales presentation,but he also knows that he:

A) should take control of the conversation.
B) should only ask questions if he already knows the answers.
C) needs to first determine whether the customer is an order getter or order taker.
D) needs to listen carefully to the answers.
E) all of these.