If an Offeree Dispatches Both an Acceptance and a Rejection

Multiple Choice

If an offeree dispatches both an acceptance and a rejection to an offer:

A) the acceptance is effective as soon as it is dispatched and a contract is created.
B) the rejection is effective as soon as it is dispatched and no contract can be created.
C) neither the acceptance nor the rejection is effective and another response must be issued.
D) whichever response reaches the offeror first will determine whether a contract is created.