Each week, a department store places a different item of clothing on sale. Which of the following is an explanation based on price discrimination for why the store conducts such regular sales? A. The store attempts to sell the item to customers with high reservation prices first, and then sells to customers with lower reservation prices later. B. The store attempts to sell the item to customers with relatively elastic demand first, and then sells to customers with relatively inelastic demand later. C. The store attempts to sell the item to customers with relatively inelastic demand first, and then sells to customers with relatively elastic demand later. D. Both A and C. E. Both A and B.