Which of the following is the calculation of the failure-to-file penalties?

a.	Half of 1 percent (0.5 percent) of the tax due for each month late, limited to 25 percent of the taxes due
b.	5 percent of the tax due for each quarter late, limited to 25 percent of the taxes due
c.	5 percent of the tax due for each month or part of the month that it is late, limited to 25 percent of the taxes due
d.	20 percent of the tax due
e.	5 percent of the tax due