-The above figure shows a graph of the market for pizzas in a large town. If the price falls from $10 to $7 per pizza, the quantity of pizzas demanded

-The above figure shows a graph of the market for pizzas in a large town. If the price falls from $10 to $7 per pizza, the quantity of pizzas demanded will
A)increase by 20.
B)decrease by 30.
C)increase by 30.
D)decrease by 10.