Which of the following is a reason companies use standard costs? O A. to set sales prices of products and services O B. to ensure the accuracy of the financial records OC. to enhance customer loyalty OD. to share best practices with other companies Windspring Spas, Inc. reports the following information for August: Sales Revenue $610,000 Variable Costs 400,000 Fixed Costs 60,000 Calculate the contribution margin for August O A. $550,000 OB. $340,000 O c. $150,000 OD. $210,000 Robusta Coffee Importers sold 7.000 units in October at a sales price of S45 per unit. The variable cost is $20 per unit. The monthly fixed costs are $8,000. What is the operating income camed in October O A $315.000 OB. 5140.000 OC. $175.000 OD. $167.000