Question 4 Imagine a wine-producing region where grapevines can be grown in different plots of land. Plots of Type A contain a mix of sand, silt, and clay that drains well but contains a moderate amount of water and nutrients and lie within the preferred pl range. They are also easy to reach with transportation machinery and tools that make maintenance and harvest easy. Plots of Type B are also easy to reach but the soil retains too much water when it rains, reducing the amount of grapes produced per vine for the same effort in maintenance and harvest. Finally, plots of Type C are rocky and steep, difficult to reach and move through for workers and machinery and the soil doesn't retain water almost at all. As a consequence, producing on these plots is very costly. Let's assume that the supply curve for each plot type is as follows: Type A: P = 30Qs + 300 Type B: P = 45Qs + 600 Type C: P = 65(Qs - 25) + 900 if Qs 2 25 and Qs = 0 if P