Which One of the Following Statements Is TRUE

Multiple Choice

Which one of the following statements is TRUE?

A) The ideal of zero bias and zero MAD can be accomplished by systematically searching for the best values of the smoothing constants.
B) Bias is always less than MAD.
C) For projections of more stable demand patterns without trends,seasonal influences,or cyclical influences,use larger values of n in the simple moving-average approach.
D) One disadvantage of a weighted moving average forecast is that it does not allow you to emphasize recent demand over earlier demand.