Kent Has $200,000 in an Investment Paying 8% Annual Interest

Kent has $200,000 in an investment paying 8% annual interest. Her marginal tax rate is 40%. Which of the following statements is false?  

A)  Ms. Kent's annual before-tax cash flow from this investment is $16,000.
B)  If the interest is tax-exempt, Ms. Kent's annual after-tax cash flow is $16,000.
C)  If the interest is taxable, Ms. Kent's annual after-tax cash flow is $6,400.
D)  None of the above is false.