what is the effective rate of the second option over 10 years? How do you solve for this using a financial calculator and not in excel?

You are choosing between two mortgage options for a $1,000,000 property. The first option is a 60% LTV mortgage at an interest rate of 8%. This loan is an interest only loan, and it also charges a 1.5% origination fee. The second option consists of two loans combined together. The primary loan (first mortgage) is a 50% LTV loan at an interest rate of 6.5%. This loan computes the payment as if it were a 30 year mortgage, but the mortgage balance is actually due in 10 years and the loan charges a 1% origination fee. The secondary loan for this option is a 10% LTV loan at an interest rate of 10%. This loan is interest only and is also due in 10 years and charges a 3% origination fee. What is the effective rate of the second option over 10 years? a. 8.2415% b. 7.3111% c. 7.1593% d. 6.954%