Sales for the past 8 months at Dalworth Company are given here. Month Jan Sales ($ Millions) 20 Feb 24 Mar 27 Apr 31 May 37 Jun 47 July August 53 62 a) Use a 3-month weighted moving average to forecast the sales for the months June, July, and August. Use weights of (10), (5), and (1), giving more weight to more recent data. b) Use exponential smoothing with a = 0.4 to forecast the sales for the months June, July, and August. Assume that the forecast for May was $39 million. c) Calculate the Mean Absolute Percent Error (MAPE) for each of the two forecasting methods: 3-month weighted moving average and exponential smoothing, for each month (June, July, and August). Based on these calculations, identify which method provided a more accurate forecast for each month. Be sure to show all error measurements.