Caryn negotiates to buy 50 washers and 50 dryers from the "We-Clean-It Company." These machines are going into laundromats that Caryn operates with her family. Because these machines will be heavily used, Caryn got the company to agree to a one-year warranty instead of the standard 90-day warranty. Following the negotiation, Caryn signs a written contract. Only later, Caryn realizes there is no warranty provision in the written contract. What should Caryn do to be able to enforce the original extended warranty agreement?