Robichau Inc. reported the following results from last year's operations: Sales Variable expenses Contribution targin Fixed expenses Het operating income Average operating its 5 6,300,000 4,930,000 1,370,000 903,000 5 567,000 53,000,000 At the beginning of this year, the company has a $900,000 investment opportunity with the following characteristics: Sales Contribution margin ratio Tixed expenses #1,630,000 305 of sites $ 306,000 The company's minimum required rate of return is 20%. Last year's return on investment (ROI) was closest to: 47.646 18.996 9.096 45.796