Sam Snider died February 14, 2013, survived by his spouse Janet and several children. Sam had not made any taxable gifts. Sam's gross estate was $7 million. In each of the following independent situations, indicate the amount of Sam's exemption equivalent that is portable to Janet and that can be used by Janet's estate if Sam's executor makes the appropriate election.
a. Sam's deductions, including the marital deduction, total $3.7 million; Janet dies in 2014.
b. Sam's deductions, including the marital deduction, total $1.1 million; Janet dies in 2014.
c. Sam's deductions, including the marital deduction, total $6 million; Janet dies in 2018.
d. Sam's deductions, including the marital deduction, total $5.5 million. Janet remarries late in 2013. Her new spouse dies early in 2014 with a $9 million taxable estate, and Janet dies late in 2014?