Suppose a tax of $3 per unit is imposed on a good. The supply curve is a typical upward-sloping straight line, and the demand curve is a typical downward-sloping straight line. The tax decreases consumer surplus by $3,900 and decreases producer surplus by $3,000. The tax generates tax revenue of $6,000. The tax decreased the equilibrium quantity of the good from A. 2,400 to 2,000. B. 2,600 to 2,000. C. 3,000 to 2,400. D. 2,000 to 1,500.