Last year Easton Corporation reported sales of S480,000, a contribution margin ratio of 25% and a net profit of $20,000 Based on this information the break even point ($) was O a $506,000 Ob $435,000 O c $400 000 d. 5600,000 Schister Systems uses the following data in its Cost-Volume-Profit analyses Total Sales $ Variable expenses 400,000 280,000 Contribution margin 120,000 Fixed expenses 100,000 20,000 Net operating income $ What is total contribution margin if sales volume increases by 20%? O a $158,400 O b. $80,000 O c. $200,000 O d. $144 000