Answer:
B. Equilibrium price and equilibrium quantity both decreased
Explanation:
As we can see in the figure that there is a shift of the demand curve on the left side so it means it decrease the equilibrium price & equilibrium quantity. But if the shift of the demand curve is in the right side so this means that there is an increase in the equilibrium price & equilibrium quantity.
Since there is shift from D to D1 , so the option b is correct
