Dvwxyz 68) Refer to the above diagram, where 8.1 and D1 are the domestic supply and demand for a product and Pc is the world price of that product. If this economy was entirely closed to international trade, equilibrium price and quantity would be: a. P2. and z. b. Pa and X. c. Pc and z. d. Pc and v. 69) Refer to the above diagram, where 8.1 and D1 are the domestic supply and demand for a product and Pc is the world price of that product. If the economy is opened to free trade, the price and quantity sold of this product would be: a. Pc and v. b. Pa and z. c. Pt and y. d. Pc and z. 70) Refer to the above diagram, where 8.1 and D1 are the domestic supply and demand for a product and Pc is the world price of that product. With free trade, that is, assuming no tariff, the outputs produced by domestic and foreign producers respectively would be: a. v and vz. b. w and wy. c. w and wz. d. vx and x2. 71) Refer to the above diagram, where 8.1 and D1 are the domestic supply and demand for a product and Pc is the world price of that product. With a per unit tariff in the amount PcPt, price and total quantity sold will be: a. P1 and x. b. Pc and z. c. Pt and y. d. Pa and X