Porter Company has provided the following data for the second quarter of the most recent year: Sales $330,000 Fixed Manufacturing Overhead $50,000 Direct Labour $71200 Fixed Selling Expenses $45,250 Variable Manufacturing Overhead $40,350 Variable Administrative Expenses $49,700 Direct Materials $49,850 Fixed Administrative Expenses $44,000 Variable Selling Expenses $49,000 Assume that direct labour is a variable cost and that there were no beginning or ending inventories. SHOW ALL WORK A. What was the total contribution margin of Porter Compa ny for the second quarter? B. What was the gross margin for Porter Company for the second quarter