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Demand data for a product over the last 5 months are given below. Calculate forecasts for months 4 through 6 using three-month moving averages. Do not round answers. Month Demand Forecast 171 2 138 3 156 4 162 5 168 6Match each of the following with the related terms: Predicting future values by using historical data Exponential smoothing with a = 1 Difference between forecast and actual value ) Qualitative forecast method a. Forecast error b. 1 period moving average c. Time series forecasting d. Delphi Method