4. The Nook e-reader and the Kindle are devices that can be used to read e-books. What would you expect to happen in the market for Kindles if its competitor Barnes and Noble cut the price on its Nook e-reader?

&a. The demand for Kindles will increase, causing the equilibrium price and quantity to increase.

&b.The demand for Kindles will decrease, causing the equilibrium price and quantity to decrease.

&c. Thesupply of Kindles will increase, causing the equilibrium price to decrease and the equilib rium quantity to increase.

&d.The supply of Kindles will decrease, causing the equilibrium price to increase and the equi librium quantity to decrease.

&e. The supply of Kindles will decrease, causing the equilibrium price and quantity to increase