Mark and Mary are married and file a joint tax return. They borrow $160,000 during the year to buy land that will be held for investment. In 2020, they also paid interest of $10,000 on the loan. The couple's adjusted gross income for the year is $80,000. The following items are also related to investments of Mark and Mary's:

Investment Income (interest and dividends received) - $9,000

Property tax on investment land - $800

Long Term Capital Gain on Sale of Stock - $4,700

Investment Counseling Fees - $1,100

What is the maximum investment interest deduction that Mark and Mary may take for 2020? Assume the couple does not make any special election for calculating investment income.

A. $10,000

B. $7,100

C. $7,900

D. $9,000

E. $4,700