Figure 4-6 -Refer to Figure 4-6. If the Demand Curve Shifts from Curve

Figure 4-6
-Refer to Figure 4-6. If the demand curve shifts from D to D₁, what do we know?

A) Firms would be willing to supply less than before.
B) People are less willing to buy the product at any price than before.
C) People are now more willing to buy the product at any price than before.
D) The price of the product has decreased, causing consumers to buy more of the product.