Many forecasting techniques use time series data on the variable of managerial interest $($e$.$g$.,$ sales$)$ to make forecasts of the variable in the future time periods. Which of the following statements is true about forecasting techniques?

Because forecasting techniques use numbers, they are always accurate.

A perfect forecasting technique can be selected in most situations.

Forecasting techniques are never perfect and usually produce some error.

Use of more time series data always results in forecasts that are more accurate.