3. Interest calculations: Assume all of these loans were taken up on May 1, 2019. Calculate the interest expenses for the years 2019 and 2020. 2019 2020 a. $100,000, 3 years, 6.2% p.a. b. $34,960, 1 year, 10.99% p.a. c. $15,000, quarterly installments, 2 years, 12% p.a. d. $24,200, semi-annual installments, 5 years, 8.5% p.a. e. $6,000, monthly installments, 3 months, 1% per month