tember Sun Question 1 learn.bilgi.edu.tr @ Consider the following legitimate simplex tableau. Z X1 X2 X3 X4 1 -3 0 0 12 0 6 1 0 2 0 0 0 0 -2 0 -3 0 1 0 20010 X5 X6 RHS -2 -1 2113 22 3 11 12 a. Answer the following based on the blow tableau. Which variables are in the basis? What is the value of each variable? Clearly present all 6 variables. Is this basis feasible or not? Explain your reasoning. Is this basis optimal or not? Explain your reasoning. Let X4, X5, and x6 denote the slack variables for the first through third constraints, respectively.. Which constraints are binding? Explain your reasoning. b. Starting with the solution given above, find the optimal solution using simplex method. Specify the values of variables and objective function at each iteration.