Which of the Following Should Be Done by a Salesperson

Which of the following should be done by a salesperson before meeting a prospect?​

A) ​He or she should call the prospect and state the price of the product or service offered.
B) He or she should call the prospect and ask for an order.
C) ​He or she should send the qualified prospect a sales letter.
D) ​He or she should gather basic information about the prospect.
E) ​He or she should request a referral or letter of introduction from the qualified prospect