All of the following concerning extension of time to file are correct EXCEPT O A. AU.S. citizen or resident who is on military or naval duty outside the U.S. (or Puerto Rico) on April 15 is given an automatic 2-month extension without the necessity of filing Form 4868. OB. If the required payment is made by credit card by the regular due date for the return, the return can be filed any time before the 6-month extension period ends. C. Requesting an automatic 6-month extension before the regular due date for the return postpones the requirement to make payment of any tax due. An automatic 6-month extension can be requested by filing Form 4868. D