A company cannot effectively differentiate its branded footwear from the brands of rivals and thereby attract more buyers by a refraining from bidding on contracts to supply private-label footwear to chain retailers b outspending most all other rivals on search engine advertising and branded advertising. c offering buyers a bigger selection of models/styles to choose from than most all other rivals. d producing and marketing branded footwear with a higher S/Q rating than the branded footwear of most all other rivals. e offering a higher mail-in rebate than most all other rivals.