please answer Only (B)

1(A). Freya is a new name in the retail industry that just started off its journey. With the right strategies, the brand's grandeur will only rise with time. However, the founders really want to predict the customer demand right for the months from January to December. Hence, they need to figure out the right forecasting techniques. They are considering 3 Period Moving Average, a Weighted Moving Average using 0.5, 0.3, 0.2 and Exponential Smoothing (use any value between 10 - .18 as the value of alpha). (7.5) Period Demand 3 period Moving Average Weighted Moving Average Exponential Smoothing January 70 February 72 ** March 76 * 80 ** April ** 84 * ** *** May June 86 85 July ** ::: ** August 83 87 ** September ** *** October 90 ** November 94 December 93 (B) Compare the error performance of these forecasting techniques by using MAD, MSE and MAPE. Figure out the better forecasting technique among 3 Period Moving Average, Weighted Moving Average and Exponential Smoothing by doing the error calculation. (7.5)