单项选择题
According to the passage, which of the following is not true about the definition of price（）
A．Price system is a complicated network. B．Price refers to the quantity and quality of the product. C．Price is an amount of money paid by the buyer to the seller. D．Besides money, many other factors are involved in the price system.
单项选择题 According to the passage, which of the following is NOT a factor in the complete understanding of price（）
单项选择题 What is the best title for the passage（）
单项选择题 According to the passage, the price system is related primarily to （）
