Which of the following is among the $13$ competitive factors that affect each company's branded footwear sales volumes and market shares in each of the four geographic market regions? The average number of discount $-$price sales promotions on athletic footwear that each company's footwear retailers have annually The number of retailers stocking each company's footwear brand and the number of weeks each company takes to deliver orders to retailers The average size of the percentage price discount off the standard retail price that footwear companies offer people shopping for athletic footwear at their websites The percentage of a footwear$-$maker's models$/$styles that have retail prices under $$75$ The length of the warranties $(30$ days, $60$ days, $90$ days, $180$ days, or $1$ full year$)$ covering defective materials or workmanship that each footwear$-$maker elects to provide on each branded pair purchased by buyers