Answer: C
Step-by-step explanation:
To determine the current interest rate on the loan with a variable interest margin linked to the federal funds rate, you simply add the variable interest margin to the current federal funds rate:
Current Interest Rate = Federal Funds Rate + Variable Interest Margin
Current Interest Rate = 8.1% + 0.8% (0.8% is equivalent to 0.008 in decimal form)
Current Interest Rate = 8.1% + 0.008 = 8.108%
So, the current interest rate on this loan is 8.108%.