Riverbed Cupcakes Co. is selling cupcakes for $10 for a box of one dozen. Riverbed has fixed costs equaling $87480 per year, and its accountant has calculated the contribution margin ratio on each box of donuts to be 60% of the selling price. Based on this information, which of the following statements is correct? The monthly break-even point is 1458 boxes sold. The monthly break-even point is 1215 boxes sold. The monthly break-even point is 1315 boxes sold. The monthly break-even point is 1115 boxes sold