The Winters exponential smoothing model (WES) is represented in a spreadsheet by 4 columns. The column labels are

Select one:

a.

Alpha, Beta, Gamma and Forecast

b.

Level, Trend, Seasonal and Forecast

c.

Error, Smoothed Error, Absolute Smoothed Error and Forecast

d.

Moving Average, Centred Moving Average, Deseasonal and Forecast

e.

None of the above