Jack Sage used the cash method of accounting. At the time of his death, he was entitled to receive $12,000 from clients for his services and he had accrued bond interest of $8,000, for a total income in respect of a decedent of $20,000. He also owed $5,000 for business expenses for which his estate is liable. The income and expenses are reported on Jack's estate tax return. The tax on Jack's estate is $9,460, after credits. The net value of the items included as income in respect of the decedent is $15,000 ($20,000 - $5,000). The estate tax determined without including the $15,000 in the taxable estate is $4,840, after credits. The estate tax that qualifies for the deduction is what amount? A. $0 B. $4,620 C. $4,840 D. $9,460