Shaun Wanted to Purchase a Used Car

Multiple Choice

Shaun wanted to purchase a used car. He was willing to either trade his old car or pay cash to get what he wanted. What was missing from this exchange?

A) There must be at least two parties involved.
B) Money must be used in the transaction.
C) At least one party must feel obligated to accept the offer.
D) At least one party must have something of value that the other party desires.