Question: A certain dataset contains 50 qualitative variables, each has more than 10 classes. In performing subset selection for a regression problem, would you use best

A certain dataset contains 50 qualitative variables, each has more than 10 classes. In performing subset selection for a regression problem, would you use best subset selection or forward stepwise selection?

Best subset selection because it guarantees to find the best possible model

Best subset selectionbecause it is suitable for a largenumber of predictors

Forward stepwise selection because the problem is too large for best subset selection

Forward stepwise selectionbecause it guarantees to find the best possible model

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