OCBC Bank and Tesla. It contains historical data on the stock price changes, OCBC dividend payout, and the USD/SGD exchange rate over the period. (a) Compute the annual returns of the two (2) stocks in SG dollar terms for the years 20182022. For this computation, make sure to distinguish the price return from the dividend return and the foreign exchange gain (or loss) percentage on the Tesla share. (15 marks) (b) Compare the returns of OCBC and Tesla by using successively the arithmetic and the geometric approach, then examine in less than two hundred (200) words (including any cited reference), the different results you can observe across the two return methods. For this comparison, make sure to compute the cumulative and average annualised returns for the two (2) stocks separately over the last two (2), and five (5) years