4. You had bought 100 shares of Rivil stocks in April 2020 at 57.72 per unit and sold all of the stocks on July 2020 at 75.82 per unit. How much is your net gain in $? Assume that on April 2020, the exchange rate was $=0.8324 and in July 2020, the exchange rate is $=0.9386. Use 4 significant figures in your calculation. a. -$1,143.96 b. $1,143.96 -$2,311.85 d. $2,311.85 c. 5. You want to buy 100 shares of stock at RM50 per share because you feel it will rise to RM75 per share within four months. The stock pays RM2 per share in annual dividends. You are going to buy the stock with 70% margin and will pay 10% p.a. interest on the margin loan. What is the annualized rate of return of this margin transaction if you sell that 100 shares after four months? a. 71.79% b. 215.7% 287.16% d. 71.9% c