5. The following tableau is provided for a maximization problem. The values of a,b,c,d, and Z are unknown. (32 points) zx3x4x6 Give restrictions on ALL of the unknowns so that the following statements are true for the given tableau. (Note: some unknowns may not matter for a specific situation, so you can write DNM, meaning it does not matter.) A. The current solution is optimal, but alternative optimal solutions exist. B. The current solution is an infeasible basic solution. Which variable is infeasible? \begin{tabular}{|l|l|} \hline d & \\ \hline Z & \\ \hline \end{tabular} C. The current solution is degenerate. Which variable is degenerate? \begin{tabular}{|l|l|} \hline d & \\ \hline Z & \\ \hline \end{tabular}