want the answer for d and e part

Your manager is trying to determine what forecasting method to use. Based upon the following historical data, calculate the following forecast and specify what procedure you would utilize a. Calculate the simple three-month moving average forecast for periods 4-12. (Round your answers to 3 decimal places.) a. Calculate the simple three-month moving average forecast for periods 4-12. (Round your answers to 3 decimal places.) b. Calculate the weighted three-month moving average for periods 412 using weights of 0.60 (for the period r1 ): 0.30 (for the period t2 ), and 0.10 (for the period t3 ). (Do not round intermediate calculations. Round your answers to 1 decimal place.) d. Calculate the exponential smoothing with trend component forecast for periods 212 using an initial trend forecost ( T$15 of 150 , an initial exponential smoothing forecast (F.D of 63 , an a of 0.30, and a of 0.40. (Do not round intermediate calculations. Round your answers to 3 decimal places.) e-1. Calculate the mean absolute deviation (MAD) for the forecasts made by each technique in periods 4-12. (Do not round intermediate calculations. Round your answers to 3 decimal places.) e-2. Which forecasting method is best? Single exponential smoothing forecast Exponential smoothing with trend forecast Three-month weighted moving average Three-month moving average