City Cycles has just started selling the new XYZ-10 mountain bike, and below are the monthly sales. Amit wants to forecast by exponential smoothing (setting February's forecast equal to January's sales) with alpha = 0.1 Barbara wants to use a 3-period moving average. Sales Amit Barbara Amit error Barbara Error January 400 ------ February 380 400 March 410 April 375 May a) Fill in the table with what Amit and Barbara each forecast for May and the earlier months, as relevant. b) Assume that May's figure turns out to be 405. Append the table with error columns then calculate MAD for both Amit's and Barbara's method. Based on these calculations, which method seems more accurate?