Robichau Inc. reported the following results from last year's operations: Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets $6,300,000 4,930, eee 1,370,000 803, eee $ 567.888 $3,800, eee At the beginning of this year, the company has a $900,000 investricnt opportunity with the following characteristics: Sales Contribution margin ratio Fixed expenses $1,530,000 30% of sales $ 396,600 The company's minimum required rate of return is 20% last year's return on investment (ROI) was closest to: Multiple Choice 18.9% o o o o 457%