Assume the following (1) Total sales = $180,000 (2) the contribution margin ratio = 40%, and (3) total fixed expenses = $45,000. Given these three assumptions, the margin of safety percentage is: Multiple Choice 58.3% 62.5% O 37.5% 150 OX View History Bookmarks People Tab Window Help 44%) Thu 9:17 PM Assume the following (1) contribution margin = $150,000 (2) net operating income - $15,000, and (3) sales increase by 17%. Given these three assumptions, net operating income will increase by: Multiple Choice 170% O 2% 17