An analyst is evaluating two time-series forecasting techniques. Using data from the past, she notes that technique B would have performed better than technique A over the evaluation period. If she goes ahead and chooses technique B for future use, she must therefore be confident that __________.
A fundamental assumption of time-series forecasting is invalid in this setting
B. Unprecedented trends or cycles will emerge in the future
C. Random variation is increasing in this time series
D. Important predictor variables are missing from Technique A
E. None of these