Required information [The following information applies to the questions displayed below.] Raner, Harris & Chan is a consulting firm that specializes in information systems for medical and dental clinics. The firm has two offices-one in Chicago and one in Minneapolis. The firm classifies the direct costs of consulting jobs as variable costs. A contribution format segmented income statement for the company's most recent year is given Office Total Company Chicago Minneapolis 100% 30% 70% 528 18% 100% 60% 40 15 25% $525,000 100.0% Sales Variable expenses Contribution margin Traceable fixed expenses Office segment margin Common fixed expenses not traceable to offices Net operating income $105,000 31,500 73,500 54,600 123,900 23.6% $ 18,900 $420,000 252.000 168,000 63,000 $105,000 283,500 54.0% 241,500 46.0% 117,600 22.4 84,000 39,900 16.0% 7.6% Required 1-a. Compute the companywide break-even point in dollar sales 1-b. Compute the break-even point for the Chicago office and for the Minneapolis office 1-C. Is the companywide break-even point greater than, less than, or equal to the sum of the Chicago and Minneapolis break-evern points