please solve the question clearly and simply.

(10 points) A manufacturing company has monthly demand for one of its products as follows: A. Develop a three-period weighted moving average forecast with weights of 0.40,0.40, and 0.20 for the most recent values, in that order. B. Develop an exponential smoothing forecast using a=0.25. C. Calculate MAPE for each of the above methods, and indicate which method seems to be more accurate and why. D. Calculate MAD for each of forecast, and indicate which would be most accurate. E. How good is the chosen forecasting method in Part C and why