A company has been using exponential smoothing with an alpha of .2 to forecast weekly truck sales. Given the data below, what would be [MAD, MSE]? Assume an initial exponential forecast of 60 units in period 2 (i.e., no forecast for period 1). Period Demand 1 57 2 62 3 58 4 60 5 60 6 56 a. 1.42, 4.23 b. 1.70, 6.34 c. 1.70, 5.07 d. 1.79, 6.95