Amanda's gross estate consists of the following property valued at the date of death: Real Estate - $5,500,000 Cash, stock and bonds - $1,700,000 Personal Property - $300,000 Amanda's real estate encumbered by a mortgage of $450,000, and Amanda's executor paid her funeral costs of $6,000 and charged fees for $24,000. Which of the following is a true statement?

A. Amanda's adjusted gross estate is at least $7,020,000

B. Amanda's taxable estate is at least $7,020,000

C. Amanda's taxable estate is $7,050,000

D. Amanda's estate will calculate the tenative tax on $7.5 million