Question 15. The cafeteria department at Olmstead Center incurred the following costs for September 20X7: Monthly Cost September 20X7 Amount in f Manager's salary 9000 Hourly workers' wages and benefits 28,000 Food 12,000 Equipment depreciation and rental 11,000 Supplies 4000 Total cafeteria costs 64,000 The cafeteria served 12,500 meals during the month. The sum of fixed and variable cost per meal is: a. $20,000 + $3.52 b. $20,000 + f1.62 c. $44,000 + 1.60 d. f44,000 + $3.52