4. Answer the questions on the following optimization problem A that you solved for the previous assignment. max 3.x + 4y s.t. 0 2 IV IA IAIA (a) Find the optimal decision for the problem A this time using Excel. (5 points) (b) List the binding constraints for the optimal solution. (5 points) (c) Explain what you can say on the optimal value of the objective function for the following problem only from the sensitivity report of problem A. (5 points) max 5x + 4y s.t. 2 0 (d) Explain what you can say on the optimal value of the objective function for the following problem only from the sensitivity report of problem A. (5 points) max 3.6 + 4y s.t. C 4 3.x + 2y 0 VI VI VI AL (e) Explain what you can say on the optimal value of the objective function for the following problem only from the sensitivity report of problem A. (5 points) max 3.6 + 4y - 2 s.t. T VI VI 3.0 + 2y 0 y 2, 4,2 (f) Explain what you can say on the optimal value of the objective function for the following problem only from the sensitivity report of problem A. (5 points) max 3.x + 4y + 2z s.t. 4 3.1 + 2y VI VI VI AL 0