completly lost :( please help its Business Law

8.1 Before deciding which remedies are available under Article 2 of the UCC, one must first determine whether the transaction involved the sale of goods. Consider the following fact pattems. A. Tanzer entered into a contract with Audio Visual Artistry to install a smart home system in Tanzer's house, which was under construction. The contract included expert installation services for a custom home theatre, lighting, music, and phone system. Was the contract for a sale of goods or services? [Audio Visual Artistry v. Tanzer, 403 S.W.3d 789 (Tenn. Ct. App. 2012).] B. Wachter, a construction company, entered into a contract to purchase an accounting and project management software package from DCI, a company that develops, markets, and supports software for construction companies. The package included "installation of the software, a full year of maintenance, and a training and consulting package." Was the contract for a sale of goods or services? [Wachter Management Co. v. Dexter & Chaney, Inc., 144 P.3d 747 (Kan. 2006).) C. A customer sued a New York restaurant for breach of warranty after a glass of water allegedly exploded in his hand during the course of a meal. Does the claim involve the sale of goods? [Gunning ex rel. Gunning v. Small Feast Caterers, Inc., 777 N.Y.S.2d 268 (N.Y. Sup. 2004).] D. Brenda Brandt underwent an operation at the Sarah Bush Lincoln Health Center to implant a ProtoGen Sling to resolve her urinary incontinence. Instead of solving the problem, the sling resulted in serious complications and was subsequently removed. After the device was recalled by its manufacturer, Brandt sued the Health Center for breach of warranty. Does the claim involve the sale of goods or services? [Brandt v. Boston Scientific Corp., 792 N.E.2d 296 (III. 2003).)