2. (35) Consider the quarterly sales data: datal {10, 31, 43, 16, 11, 33, 45, 17, 14, 46, 50, 21, 19, 41, 55, 25} a) Forecast demand for 6th month by using 2 month MA. b) Forecast demand for 6th month by using by employing EWMA with a=0:9. c) Which forecast result you would prefer? and why