Modern Artifacts can produce keepsakes that will be sold for $93 each. Nondepreciation fixed costs are $1,200 per year, and variable costs are $65 per unit. The initial investment of $3,600 will be depreclated straight-fine over its useful life of five years to a final value of zero, and the discount rate is 11% a. What is the degree of operating leverage of Modern Artifacts when sales are $6,975 ? Note: Round your answer to 1 decimal place. b. What is the degree of operating leverage when sales are $12,555 ? Note: Round your answer to 1 decimal place