You have developed a forecasting model for the USDJPY exchange rate. Your first 1-period forecast was at t = 0 and was equal to 111.00. At the time, the actual exchange rate was 109.28. You update your forecast each period. Your next two forecasts are 115.65 and 112.20 at times t = 1 and 2, respectively. The actual exchange rates turned out to be 110.35, 113.69, and 111.96 at times t = 1, 2, and 3. Given these values, what is the root mean squared error (RMSE) of your prediction model (to the nearest 0.1) over the three periods? Group of answer choices

1.0

1.2

1.4

None of the above