Which of the following agreements would be discharged due to a breach by one of the parties? I. An agreement that calls for delivery of 10,000 black bags. 9,900 items are delivered by accident. II. An agreement that calls for delivery of 10,000 black bags. Three days before the delivery date, the seller tells buyer that she will only send 9,990 items because she "feels like making the buyer's life miserable." III. An agreement that calls for delivery of 10,000 black bags. Only 5,000 are delivered. (A) I only (B) I and II (C) I and III (D) II and