Consideration Is an Essential Element in the Formation of Contract

Consideration is an essential element in the formation of contract

A) because the law of contracts is based on the concept of bargain.
B) because parties must give careful consideration to the contract they are entering into.
C) because the courts will not make a contract for the parties.
D) because it is concerned with various considerations that go into the formation of contracts.
E) because the person who make the promise, needs to be sure he or she wants to make a contract before the offer is made.