A manufacturer of tiling 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 360,000 $1,890,000 $ 954,000 $ 254,000 $ 369,000 $ 220,000 $ 93,000 The company's contribution margin ratio is closest to: Multiple Choice 49.5% O 80.5% O 30.0% O O 74.9%