Commodity difference: refers to the price difference between the same product due to the circulation, the purchase and sale of the product, the purchase and sale season, and the different quality. According to the above definition, Which of the following options are not classified as commodity spreads:? ['Supermarket vegetables are 1.5 yuan per catty in the morning and 2 yuan per catty in the afternoon.', 'Volkswagen and Fukang cars have different prices.', 'Beef in Jiadi is 2 yuan cheaper per pound than B, because Jiadi is a pastoral area.', 'The price of the same book when it was first released is not the same as two years later.']