The Warren Watch Company sells watches for $21, fixed costs are $135,000, and variable costs are $12 per watch. a. What is the firm's gain or loss at sales of 9,000 watches? Loss, if any, should be indicated by a minus sign. Round your answer to the nearest cent. $ What is the firm's gain or loss at sales of 17,000 watches? Loss, if any, should be indicated by a minus sign. Round your answer to the nearest cent. $ b. What is the break-even point (unit sales)? Round your answer to the nearest whole number. units c. What would happen to the break-even point if the selling price was raised to $34 ? d. What would happen to the break-even point if the selling price was raised to $34 but variable costs rose to $28 a unit? Round your answer to the nearest whole numbe