Edsel Muffler, Inc., showed the following sales figures for its stainless steel muffler, Rusty, over the past five months: ?a. b. Month Sales August 220 September 240 October 180 November 200 December 160 Assume the base value at the end of November was 215 units and the trend value was -25. What would be the forecast for the following February made at the end of December (α=0.2, β=0.4) In case that no base value or trend was provided to you, what would be the forecast for the following February made at the end of December (α=0.2, β=0.4).