Rob is going over his currency exchange receipts from his trip to japan and south korea. when he was in japan, he exchanged us dollars for japanese yen at a rate of 1: 87.441, and when he was in south korea, he exchanged japanese yen for south korean won at a rate of 1: 12.395. to three decimal places, what was the exchange rate of us dollars to south korean won? a. 1: 0.092 b. 1: 7.055 c. 1: 99.836 d. 1: 1,083.831