K-Mart offers to buy 1000 pairs of shoes from Adidas. The written offer provides for 1000 pairs at $10 per pair, to be delivered May 1 . The offer has no other provisions. Adidas sends a written acceptance. However, the acceptance states that if any claims arise under the contract, Adidas must be notified within 10 days. K-Mart does not object to this provision. Both parties are merchants. Which of the following best describes this situation? No contract exists. The purported acceptance contains additional terms, so it is a counteroffer, which has not been accepted. No contract exists if the additional terms are construed to be material terms. A contract exists. If the additional terms are construed to be material, they are not part of the contract. If the additional terms are not material, they are part of the contract. A contract exists, but the additional terms are not part of the contract because of the knockout rule