Madison was married at the time of her death and her gross estate consisted of $22 million in stock and bonds. Madison left all of her property to her spouse. What is the result?

1. Madison's surviving spouse will have an income tax basis in the inherited property of zero.
2. Madison's adjusted gross estate will be zero.
3. Madison's estate will have a tentative estate tax of zero.
4. Madison's taxable estate will be zero.
5. None of these.