Tuan Tran is a currency speculator who enjoys betting on changes in the foreign currency exchange market. Currently the spot price for the Japanese yen is 129.87/$ and the 6-month forward rate is 128.53/$. Andrea thinks the yen will move to 128.00/$ in the next six months. Tuan Tran should _______ to profit from changing currency values a. buy yen b. buy dollars c. sell yen d. not enough information to answer this