B MC Qu. 13-25 (Algo) Industries X and Y both have... Industries X and Y both have four-firm concentration ratios of 63 percent, but the Herfindahi Index for X s 1,273, while that for Y 1,19%. These data suggest Multiple Choice 43:02 greater market power in than in X ces Greater market power in any both industries are monopolistically competitive that price competition is stronger in X than in Y