'I have posted the same question again since I can't re-upload it here can you go check and refund this question thx.

points Y and X in the figure at right, where Do and D, represent demand curves for DVDs in Regina. 10- g that TV shows are a substitute for DVDs, the movement from point Y to point X could have been caused by an increase in preference for DVDs combined 8- with a rise in price of DVDs. an increase in preference for DVDs. Y 6- a decrease in the price of DVDs. Price of DVDs X an increase in preference for DVDs combined 4- with a fall in the price of DVDs. 2- Quantity of DVDs