California will impose an underpayment penalty when taxes are not paid by the original tax return due date. The penalty is 5 percent of the unpaid tax as of the due date plus 1/2 of 1 percent each month, or part of a month the tax remains unpaid, not to exceed 40 months. The maximum penalty is _____of the total unpaid tax.

Select one:

a. 25 percent

b. 30.33 percent

c. 12.5 percent

d. 50 percent