Which of the following is the most important factor in determining a company's unit sales and market share of private-label footwear in a particular geographic region?
The amount of merchandising support provided to private-label retailers
The company's bid price
The appeal of the celebrities signed to endorse the company's footwear
The number of new performance features added to the company's private-label footwear line each year
Whether the company's private-label footwear has a higher S/Q rating than the footwear of rival private-label manufacturers