Consider points Y and X in the figure at the right , where D0 and D1 represent demand curves for DVDs in Regina.Assuming that Tv shows are a substitute for DVDs , the movement from point Y to point X could have been caused by :A. An increase in preference for DVDs combined with a rise in price of DVDs.B. An increase in preference for DVDS C. A decrease in price of DVDs D. An increase in preference for DVDs combined with a fall in price of DVDs

10 8- Y Y Price of DVDs X X 2- D1 Do Quantity of DVDs