Schister Systems uses the following data in its Cost-Volume-Profit analyses: Sales Variable expenses Contribution margin Fixed expenses Net operating income What is total contribution margin if sales volume increases by 20%? (2.5) 1) $62,800 2) $237,000 3) $197,500 4) $94,200 Total $ 395,000 197,500 197,500 119,000 $ 78,500