In the interest rate market, you are given annual interest rates of 8 percent in the United States and 4 percent in Japan. The interest rates are continuously compounded. An FI can borrow (by issuing CDs) or lend (by purchasing CDs) at these rates. In the currency market, you are given that the spot exchange rate is USD 0.0083333333 per one JPY. In addition, the one-year forward exchange rate is USD 0.0080 per one JPY.

If there is an arbitrage opportunity, then what should be the FI's arbitrage strategy at time t=0 (now)? (The following order of S1, S2, S3, and S4 does not matter. )