Okla. Stat. tit. 12A, § 12A-2-206: Offer and Acceptance in Formation of Contract

(1) Unless otherwise unambiguously indicated by the language or

circumstances

(a) an offer to make a contract shall be construed as

inviting acceptance in any manner and by any medium reasonable in

the circumstances;

(b) an order or other offer to buy goods for prompt or

current shipment shall be construed as inviting acceptance either by

a prompt promise to ship or by the prompt or current shipment of

conforming or nonconforming goods, but such a shipment of non-

conforming goods does not constitute an acceptance if the seller

seasonably notifies the buyer that the shipment is offered only as

an accommodation to the buyer.

(2) Where the beginning of a requested performance is a

reasonable mode of acceptance an offeror who is not notified of

acceptance within a reasonable time may treat the offer as having

lapsed before acceptance.