The preceding table illustrates the supply and demand schedule for briefcases. If there is a reduction in the price of leather used to make briefcases, enabling manufacturers to supply 100 additional briefcases at each price, the new equilibrium price

a. will be the same as the old equilibrium price.

b. will cause a rightward shift in the market demand curve for briefcases.

c. will cause a leftward shift in the market demand curve for briefcases.

d. will be $90.

e. will be $70.