The Accompanying Diagram Shows the Effect of Levying an Income

Multiple Choice

The accompanying diagram shows the effect of levying an income tax on the consumer.The pre-tax optimum is at point A,and the post-tax optimum is at point B. To measure the amount of tax money collected by the government,one uses the vertical distance between points

A) A and B.
B) A and D.
C) B and C.
D) B and D.