The following monthly budgeted data are available for the Stark Company: Product A Product B Product C Sales $500,000 $300,000 $900,000 Variable expenses 300,000 210,000 697,000 Contribution margin $200,000 $90,000 $203,000 The budgeted operating income for the month is $208,000. Submission Instructions: a. Calculate the break-even sales for the month. b. Calculate the margin of safety. c. Calculate the degree of operating leverage (two decimal points).