Please provide the math needed to solve this

18) You can buy or sell the yen spot at Y102 to the dollar. You can buy or sell the yen one-year forward at Y104 to the dollar. If U.S. annual interest rates are 4 percent, what must be the approximate one-year Japanese interest rate if interest rate parity holds? A) 6.04 percent B) 3.20 percent C) 2.75 percent D) 4.73 percent E) 6.80 percent Answer: A