Q. In 2003 Karen Pearson also Steve also Tara Carlson agreed to buy a 2004 Dynasty recreational vehicle (RV) from De Martini's RV Sales in Grass Valley, California. On September 29, Pearson, the Carlson's also De Martini's signed a contract providing that "seller agrees to deliver the vehicle to you on the date this contract is signed." The buyers made a payment of $145,000 on the total price of 356,416 the next day, when they also signed a form acknowledging that the RV had been had been inspected also accepted. They agreed to return later to have the RV transported out of state for delivery (to avoid paying sales tax). On October 7, Steve Carlson returned to De Martini's to ride with the seller's driver to Nevada to consummate the out-of-state delivery. When the RV developed problems, Pearson also the Carlson's filed a suit in a federal district court against the RV's manufacturer, Monaco Coach Corp, alleging breach of warranty under state law. The statute is limited to goods sold in California also Monaco argued that this RV had been sold in Nevada. Explain how does the UCC define a sale?