please provide correct answer as soon as possible

Sales for the past 12 months at Dalworth Company are given here. a) Use a 3-month weighted moving average to forecast the sales for the months October through December. Use weights of (3/6),(2/6), and (1/6), giving more weight to more recent data. (8pts) b) Use exponential smoothing with =0.6 to forecast the sales for the months October through December. Assume that the forecast for September was $56 million. (10 pts) c) Compare the performance of the two methods by using the mean absolute deviation as the performance criterion, with error measurement beginning in October. Which method would you recommend? ( 6pts) d) Compare the performance of the two methods by using the mean squared error as the performance criterion, with error measurement beginning in Octpber. Which method would you recommend? ( 6pts )