4. The Kalakian Company makes toys A andB, each of which needs two processes: cutting and wrapping. The contribution margin is P6 for Product A and P5 for Product B. the table below shows the maximum number of units (constraint) of each product that may be processed in two departments. Product A Product B Maximum Capacities (In Product Units) CUTTING WRAPPING 60 80 60 40 Considering the constraint in processing, which combination of Products A and B maximizes the total contribution margin? a.40 units of A and 20 units of B d. O units of A and 40 units of B b. 60 units of A and 0 units of Bum e. O units of A and 60 units of B c. 80 units of A and 0 units of B