PB1. LO 3.1 A company sells mulch by the cubic yard. Grade A much sells for $150 per cubic yard and has variable costs of S65 per cubic yard. The company has fixed expenses of $15,000 per month. In August, the company sold 240 cubic yards of Grade A mulch. A. Calculate the contribution margin per unit for Grade A mulch. B. Calculate the contribution margin ratio of the Grade A mulch. C. Prepare a contribution margin income statement for the month of August