Which of the following is not among the $13$ competitive factors that determine a particular company's unit sales and market sha of branded footwear in a particular geographic region? Each company's image rating$/$brand reputation and the appeal of the celebrities endorsing the company's footwear brand The $/$rating of each company's brand of athletic footwear in that region and the number of models$/$styles comprising the company's product line in that region The frequency with which a company has price$-$discount sales events $($monthly quarterly, or just a single annual clearance sale$)$ and the length of the warranty against materials defects that the company offers buyers $(30$ days$60$ days, $90$ days, $180$ days, $1$ year or $2$ years$)$ The average retail price the company is charging for its branded models $/$styles in the Internet Segment and the average wholesale price the company is charging for its branded models$/$styles in the Wholesale Segment The company's expenditures on brand advertising and search engine advertising