Sharon borrows an adjustable rate loan (arm) of $100,000 with 3 year loan maturity. the initial interest rate for the loan is 8.5%, the margin is 3%, the loan amortization period is 15 years, the frequency of adjustment is 1 year (monthly compounding). there will be a discount point of 3% for the loan. also, the index rates for the next 2 years are 11% and 8%, respectively. now suppose there is an annual interest rate cap of 2% specified in the loan contract, what will be the effective mortgage yield for borrowing this loan? assume that no negative amortization is allowed.