Please solve for the question mark in row 7

A. 22.32

B. 20.55

C. 21.37

D. 20.05

E. 22.78

Iris, a production manager at Sprinkle Cupcake, needs a demand forecast for the next period to help decide whether to add new production capacity. The company's sales history (in thousands of units) is shown in the table below. Use exponential smoothing with trend adjustment to forecast demand (FIT) for period 7. The smoothing constants are a=.3 and = .5 (also show your work on paper). Period Actual Forecast Trend FIT 1 12 11.00 2.00 13.00 2 15 12.70 1.85 14.55 3 16 14.69 1.92 16.60 4 16 16.42 1.83 18.25 5 18 17.57 1.49 19.06 a 6 20 18.74 1.33 20.07 7