Assume an FI sells A$100 million for US dollars on the spot currency markets at an exchange rate of A$1.10 to US $1.00 and invests the US dollar assets at an interest rate of 12% for one year. What are the Australian dollar proceeds from the US dollar investment (round to two decimals)?

A. A$100.00 million B. A$112.00 million C. A$90.91 million D. A$101.82 million

how did it work by just 100/1.1*1.12? the result should be US dollar sign, can somebody tell me the answer why?