How does the Delphi method used for forecasting work? A. It uses a panel of experts, whose identities are typically kept confidential from one another, to respond to a sequence of questionnaires. B. It uses measures that are believed to influence the behavior of a variable that the researcher wishes to forecast. O c. It obtains forecasts through a comparative analysis with a previous situation. D. It uses a single measure that weights multiple indicators and provides a measure of overall expectation