Problem II (25 points) Surgical Safety Products (SFP) sells high quality cloth consumer masks with washable polypropylene filters at a price of $25. The per unit profit contribution margin is $10. SFP is considering differentiating its product from several other competitors by using brightly colored high quality shirting fabrics for the outer mask. Doing so would increase unit cost by $5. Current monthly profits are $10,000 on 2,000 in unit sales. A. Assuming average variable costs are constant at all output levels, what is SFP's total cost function before the proposed change? (10 points) B. What will the total cost function be if higher quality fabrics are used? (5 points) C. Assume shirt prices remain stable at $25. What percentage increase in sales would be necessary to maintain current profit levels? (10 points)