Selling price Variable cost per unit Total units produced Machine-hours required to produce one unit Total machine hour available CA CA $ $ Coffee machine What is the contribution margin for per constraining resources ? 8,000.00 $ 5,600.00 $ 180 Coffee machine $1,008,000.00 ;Coffee bean grinder $1,224,000.00 Coffee machine $1,440,000.00 ;Coffee bean grinder $1,620,000.00 Coffee machine $432,000.00 ;Coffee bean grinder $1,224,000.00 Coffee machine $1,200,000.00 ;Coffee bean grinder $550,000.00 None of the other alternatives are correct. Coffee bean grinder 9,000.00 6,800.00 2 1000 4