
Passage: Demand always changes in the opposite direction to the price. If the price change causes the total income to change in reverse with the price, then the demand is elastic. In 2007, although the tuition fees of W University were reduced by 20%, the total tuition fees received by W University were higher than in 2006. In this case, the demand for W University is flexible.
Question: If the above statement is true, which of the following statements must be true?
A. A.If the change in price causes the total income to change in the same direction as the price, then demand is elastic
B. B.Compared with 2006, a 20% reduction in tuition fees will bring better economic benefits to W University
C. C.If the demand is elastic, then the price change will cause the total income to change in the same direction as the price
D. D.Compared with 2006, the enrollment of W University increased by more than 20% in 2007
Answer: