Amount of Real Output Amount of Real Output Demanded Price Level (Index Value) Supplied $ 200 300 $ 500 300 250 450 400 200 400 500 150 300 600 100 200 The table gives aggregate demand-and-supply schedules for a hypothetical economy. The equilibrium price level will be
A. 150.
B. 200
C. 250.
D. 300.