Consider the data below which includes sales data and the forecasts that would have been made using exponential smoothing with a = = 0.3 Exp. Smoothing Forecast Time Period Sales 1 90 90 2 80 90 3 100 87 4 70 90.9 5 105 84.6 6 85 90.7 Report all answers to 1 decimal place. a. Using exponential smoothing with a = 0.3, what is the forecast for time period 7? b. Using the naive value method, what is the forecast for time period 7? c. Using a 3-period moving average, what is the forecast for time period 7