Abuyer sent a signed letter to a seller that stated: “ship 100 boxes of nails at $3 per box, the price quoted in your circular.” the seller mailed the buyer a signed form acknowledgment that agreed to the buyer’s terms and stated on the reverse side: “disputes regarding quality shall be arbitrated.” the buyer did not reply to the seller’s acknowledgment, and the seller shipped the nails. when the buyer received the nails, it found their quality to be unsatisfactory and sued the seller for breach of warranty. the seller has asked an attorney whether the parties’ contract requires arbitration of the buyer’s claim. what is the best advice the attorney can provide?