The diagram below illustrates a person's initial budget line Bo. The horizontal axis measures units of good X, while the vertical axis measures a bundle of all other goods (Y) in dollars. A tax is imposed on X causing the budget line to pivot from Bo to B. a. This person's total income is M-S b. The price of good X is PS c. The unit tax on good X is T-S per unit d. An equivalent ad valorem tax would be at the rate of t