If the exponential smoothing constant (a) is taken as 0.2, then forecast sales for January 2003 would be

Question

For a product, the forecast and the actual sales for December 2002 were 25 and 20 respectively. If the exponential smoothing constant (a) is taken as 0.2, then forecast sales for January 2003 would be                       

      (a) 21                              (b) 23                           (c) 24                              (d) 27