Which form must be filed to pay taxes when an estate exceeds the exclusion amount? Question 7 options: 1) Form SS-4, Application for an Employer Identification Number 2) U.S. Treasury Form 706, U.S. Estate (and Generation-Skipping Transfer) Tax Return 3) Form 56, Notice Concerning Fiduciary Relationship 4) Form 4768, Application for Extension of Time to File U.S. Estate Tax Return