Suppose you have borrowed 50,000 at an interest rate of 8% per year compounded semi-annually and desire to repay the money with five equal end-of-year payments, with the first payment made two years after receiving the 50,000. a) Estimate the size of the annual payment. 1A b) At the time of the fourth payment, suppose you decide to pay off the loan with one lump sum payment. How much should be paid? (Use interest formula for calculations)