When comparing the accuracy of both forecasting techniques (3-year moving average and exponential smoothing with a 0.4 smoothing constant) we can conclude that

Select one:

a. the 3-year moving average is more accurate since its MSE is less than that of exponential smoothing.

b. no conclusion can be drawnthe two models are not comparable.

c. exponential smoothing is more accurate since its MSE is less than that of the 3-year moving average.

d. the 3-year moving average is more accurate since its MSE is larger than that of exponential smoothing.

e. exponential smoothing is more accurate since its MSE is larger than that of the 3-year moving average.