Suppose that both the number of buyers and the number of sellers increase. Which of the following will occur?

a. The equilibrium quantity will increase and the equilibrium price will increase.
b. The equilibrium quantity will increase and the effect on the equilibrium price is undetermined.
c. The total effect on equilibrium price and quantity is undetermined.
d. The equilibrium price will increase and the effect on the equilibrium quantity is undetermined.
e. The equilibrium quantity will increase and the equilibrium price will decrease.