
Passage: The only way that economists can distinguish between normal and low-end goods is to see how consumers react to changes in income. If people's income increases and the demand for something becomes smaller, such things are low-end goods. Similarly, if people's income decreases, their demand for low-end goods will increase.
Question: Which of the following options best matches the description of economists that distinguish between normal and low-end goods?
A. A.The poor students in the school often eat instant noodles and often go to restaurants after they find a job after graduation. For these students, instant noodles are low-end products.
B. B.In family life, with the decrease of people's income, the demand for salt has not increased. There is no doubt that salt is a low-end goods.
C. C.In an aging community, the demand for gasoline is getting smaller and smaller, and the demand for home care services is increasing. Compared with gasoline, home care service is a low-end goods.
D. D.When people's income increases, parents will buy more designer clothes for their children, and buy less when their income decreases.The designer clothes clothing is not a low-end goods, nor a normal goods, but a high-end goods.
Answer: