Complementary commodities refer to two or several related commodities that jointly meet the same desire of consumers. Under the condition that consumers' hobbies, monetary income and other commodity prices remain unchanged, if the decline in the price of commodity A causes an increase in the demand for commodity B, commodity A and commodity B are complementary commodities
According to the above definition, which of the followings belongs to complementary commodities :
Due to the increase of raw material cost, a factory adjusted the price of each bottle of wine from the original 10 yuan to 11 yuan, but it did not affect the personality of wine glasses in the market