Brownberry Bread Company makes White and Wheat bread that it sells to specialty grocery stores. Following are their production costs for a unit of each product Wheat Bread Contribution margin per unit Machine minutes needed per unit White Bread $40 8 minutes At this point, there is unlimited demand for their products. However, there are only 24,000 machine minutes available each period. Given this constraint, what is the largest contribution margin be realized each period O $144,000 5132,000 O $120.000 $456,000