Please Answer Questions B and C please

Your manager is trying to determine what forecasting method to use. Based upon the following historical data, calculate the following forecast and specify what prc Actual Month Demand a) Simple MA b) Weighted MA 1 63 2 66 0.2 0.3 0.5 3 69 198 4 68 66 203 5 70 67.67 207 6 76 69 214 7 74 71.33 220 8 78 73.33 228 9 77 76 229 10 76 76.33 231 11 82 77 78.33 235 12 81 a) Calculate the simple three-month moving average forecast for periods 4-12. b) Calculate the weighted three-month moving average using weights of 0.5, 0.3, and 0.2 for periods 4-12. c) Calculate the mean absolute deviation (MAD) for the forecasts made by each technique in periods 4-12. Which forecasting method would be preferable? MAD: Method