Bill and Jan Want to Document a Small Transaction

Bill and Jan want to document a small transaction. Bill is going to sell and Jan is going to buy Bill's coffee shop. Bill and Jan go to the Law Offices of Larry Lawyer to draw up this contract. Larry should:

A) not agree to draft a contract for both parties because there is a conflict of interest.
B) agree to draft the contract but take great care to make it fair between the two parties.
C) agree to draft the contract because, after all, Bill and Jan are adults and business people and they are able to judge for themselves if they need separate lawyers.
D) not agree to draft a contract for both parties unless both pay him an equal amount. The payment solves any conflict problem.