If demand increases and supply decreases, then the

Select one:

A. equilibrium price rises but the effect on the equilibrium quantity is unknown.

B. effect on both equilibrium price and quantity is unknown.

C. equilibrium quantity decreases but the effect on the equilibrium price is unknown.

D. equilibrium price falls but the effect on the equilibrium quantity is unknown.

E. equilibrium quantity increases but the effect on the equilibrium price is unknown.