7 Assume a company reported the following results Help 8.com Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets $400,000 260,000 140,000 40,000 $100,000 $475.000 The return on investment (RO is closest to Multiple Choice 0 21 350% o o o B42% 23.8% 7 Assume a company reported the following results Help 8.com Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets $400,000 260,000 140,000 40,000 $100,000 $475.000 The return on investment (RO is closest to Multiple Choice 0 21 350% o o o B42% 23.8%