only A, B, D & E

The hospital's administration is considering the following forecasting methods. Begin error measurement in year 3 so all methods are compared for the same years. a. Exponential smoothing, with =0.6. Let the initial forecast for year 1 be 45 , the same as the actual demand. b. Exponential smoothing, with =0.9. Let the initial forecast for year 1 be 45 , the same as the actual demand. c. Trend projection with regression. d. Two-year moving average. e. Two-year weighted moving average, using weights 0.6 and 0.4 , with more recent data given more weight