Bina Ngai Ltd gathered the following information for the year ended December 31, 2009: Fixed costs: Manufacturing Shs. 185,000 Marketing Shs. 55,000 Administrative Shs. 25,000 Variable costs: Manufacturing Shs. 120,000 Marketing Shs. 35,000 Administrative - Shs. 55,000 During the year, Bina Ngai Ltd produced and sold 5250 units of product at a sale price of Shs. 100 per unit. What is the contribution margin ratio? Select one: A. 0.40 B. 0.504 C. 0.60 D. 0.79