(1) The acceptor of a draft is obligated to pay the draft:
- (a) According to its terms at the time it was accepted, even though the acceptance states that the draft is payable “as originally drawn” or equivalent terms;
- (b) If the acceptance varies the terms of the draft, according to the terms of the draft as varied; or
- (c) If the acceptance is of a draft that is an incomplete instrument, according to its terms when completed, to the extent stated in ORS 73.0115 and 73.0407.