A manufacturer oftiling grout has supplied the following data: Kilograms produced and sold Sales revenue Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income 380,000 $1,870,000 $ 952,000 $ 250,000 $ 331,000 $ 216,000 $ 121, 000 The company's contribution margin ratio is closest to: Multiple Choice 49.1% 82.3%