Which of the Following Is Not True Concerning the Obligation

Which of the following is not true concerning the obligation of a corporation to make estimated tax payments?

A) The estimates are due the 15th day of the 4th, 6th, 9th, and 12th months of the tax year.
B) One-fourth of the estimated tax due is to be paid on each payment date.
C) Generally, unless each payment is for 25 percent or more of the tax (after credits) shown on Form 1120, an underpayment penalty will be imposed.
D) A corporation whose tax liability for the year is less than $500 is not subject to the underpayment penalty.
E) None; all are true.