Inferences drawn from the four-firm concentration ratio differ from those drawn from the Herfindahl-Hirschman index (HHI). This is due in part to which of the following? O The four-firm concentration ratio ignores the 5th-largest firm O The HHI places smaller weight on firms with large market shares O The four-firm concentration ratio is based on squared values O The HHI ignores the 5th-largest firm