Which of the Following Statements Is/are True About Time-Series Forecasting

Multiple Choice

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

A) The basic strategy of time-series forecasting is to identify the magnitude and form of each component based on available past data.
B) Time-series methods are used to make detailed analyses of past demand patterns over time and to project these patterns forward into the future.
C) Under time-series methods,demand can be divided into components such as average level,trend,seasonality,cycle and error.
D) Time-series methods are useful for long-range forecasts.
E) a,b,and c