Arthur Downing died January 26, 2021 at age 78. He made taxable transfers of $15.54 million and had no taxable estate. On his estate tax return, an election is made to allow his wife Zelda to use his unused exclusion amount. Zelda had made no taxable gifts at the time of Arthur's death. Her applicable exclusion amount is Question 5 options: a) $7,860,000 b) $2,430,000 c) $5,430,000 d) $4,860,000