Based on the following information, what is the contribution margin ratio for the Rock Lobster Pizzaria? Pizzas sold during the period 80,000 $14.00 Selling price per pizza Variable cost per pizza: $6.00 Production Selling & administrative 3.00 Fixed costs: $100,000 per year Production 20,000 per year Selling & administrative 42.9% 35.7% 64.3% 55.6% Question 10 1 pts Which of statements about the contribution income statement is correct? It is required by GAAP. Costs are classified as being either product or period. It is intended for external users. Costs are classified as being either fixed or variable