Assume the following information: i. You have $900,000 to invest ii. Current spot rate of Australian dollar (A$) is $0.62 iii. 180-day forward rate of the Australian dollar is $0.64 iv. 180-day interest rate in the U.S. is 3.5% v. 180-day interest rate in Australia is 3.0% What is the dollar profit obtainable after 180 days from covered interest arbitrage? a. $56,903 b. $61,548 c. $27,000 d. $31,500 The answer is A but I need an explanation.