You have approached a commercial bank to obtain a fully amortised mortgage loan of $600,000 to purchase your dream home. You are offered a 25-year loan with a fixed interest rate of 5.2% p.a. compounding monthly. Payment of the loan is required at the end of each month. (a) two factors that may have influenced the interest rate charged on the loan. (b) the amount you will be required to pay monthly if payments are made at the end of the month. (c) If payment of the loan was required at the beginning of each month, what would the monthly instalment be?