Sam's Shoes makes two types of running shoes: cross country shoes and track shoes. Cross country shoes sell for $95 per pair and have a contribution margin of $50. Cross country shoes also use 3 lbs. of rubber per pair of shoes. Track shoes sell for $85 per pair and have a contribution margin of $45. Track shoes use 2 lbs. of rubber per pair of shoes. Sam's Shoes is experiencing a shortage of rubber needed to make their shoes. If there is unlimited demand for their shoes, which product should Sam's Shoes focus on producing to maximize profit? Why?

• A. Focus on track shoes because they earn $22.50 per pound of rubber.
• B. Focus on track shoes because they earn $42.50 per pound of rubber.
• C. Focus on cross country shoes because they earn $31.67 per pound of rubber.
• D. Focus on cross country shoes because they earn $16.67 per pound of rubber.