The single$-$index model

Group of answer choices

enhances the understanding of systematic versus nonsystematic risk.

greatly reduces the number of required calculations relative to those required by the Markowitz model.

greatly increases the number of required calculations relative to those required by the Markowitz model.

greatly reduces the number of required calculations relative to those required by the Markowitz model and enhances the understanding of systematic versus nonsystematic risk.

enhances the understanding of systematic versus nonsystematic risk and greatly increases the number of required calculations relative to those required by the Markowitz model.