Which of the following statements about time$-$series forecasting is true?

A$.$ It makes extensive use of the data collected in the qualitative approach.

B$.$ It is always based on the assumption that future demand will be the same as past demand.

C$.$ It is based on the assumption that the analysis of past demand helps predict future demand.

D$.$ Because it accounts for trends, cycles, and seasonal patterns, it is always more powerful than associative forecasting.

E$.$ All of the above are true.