Extended products refer to the sum of various benefits that customers receive when purchasing products, including product specifications, warranty, installation, maintenance, delivery, technical training, etc. According to the above definitions, Which of the following are related to extended products:. ['A brand clothing store conducts promotional activities, and the purchase of clothing in this store is 300 yuan minus 100 yuan.', 'In order to attract customers, a car dealer promises that the cars sold in this store can enjoy a three-year warranty.', 'An electrical appliance distributor promises that customers can enjoy a 10% discount on any electrical appliances purchased in this store.', 'A game company launched an upgraded version in time to meet user needs.']