Christopher and Jamie Guest file a joint tax return and decide to itemize their deductions. The Guest's income for the year consists of 90,000 in salary, 2,000 corporate bond interest income, 800 long term capital gain, 400 qualified dividends, and 600 short term capital gain. They paid 3,000 in interest on a loan used to purchase investments. What is the amount of their investment interest expense deduction for the year?

A. 0

B. 2,600

C. 3,000

D. 3,800