Why Is an Invitation to Negotiate Not an Offer

Multiple Choice

Why is an invitation to negotiate not an offer?

A) An invitation to negotiate is not an offer because it does not express any wiliness to be bound by an acceptance.
B) An invitation to negotiate is an offer.
C) An invitation to negotiate is not an offer because there is no way to determine the reasonable intent of the negotiating parties.
D) An invitation to negotiate is not an offer because the invitation does not apply to a specific offeree.
E) An invitation to negotiate is not an offer because an offer becomes an offer only when accepted.