The Means Used by an Offeror to Communicate the Offer

The means used by an offeror to communicate the offer is:

A) the impliedly authorized means for accepting regardless of circumstances.
B) the impliedly authorized means for accepting unless the circumstances do not indicate otherwise.
C) the only authorized means of communication for accepting.
D) always the offeror's particular trade usage in communication, as it impliedly authorizes a given means of acceptance.