If Demand Decreases and Supply Increases,then the

If demand decreases and supply increases,then the

A) equilibrium quantity increases,but the effect on the equilibrium price is unknown.
B) equilibrium quantity decreases,but the effect on the equilibrium price is unknown.
C) equilibrium price falls,but the effect on the equilibrium quantity is unknown.
D) equilibrium price rises,but the effect on the equilibrium quantity is unknown.
E) effect on both equilibrium price and quantity is unknown.