The Concept of Objective Intent with Respect to Contract Law

The concept of objective intent with respect to contract law means which of the following?

A) When forming a contract,each party must expressly state an intent to be obligated under the terms of an agreement.
B) The parties must each intend to be bound by the terms of an agreement based on each party's true intent,whether or not that intent is known by the other party.
C) The parties' intent to be bound by the terms of a contract is based on whether an outsider observing the parties' words and conduct would reasonably conclude that the parties have the needed intent.
D) So long as one party intends to be bound by the terms of an agreement,the objective intent requirement will be met.