In a negatively skewed distribution,the mean is smaller than the median and the median is smaller than the mode.

Sue decided to use the double moving average model to forecast the game sales for the next week,after looking at the tabulated sales for the past twelve weeks.What exactly did she observe?

A) a time series with no trend and no seasonality
B) a time series with trend and seasonality
C) a time series with trend and no seasonality
D) a time series with seasonality and no trend