Question: Suppose you find the optimal solution to a linear programming model. Then you learn that you forgot a constraint that should be included in the

Suppose you find the optimal solution to a linear programming model. Then you learn that you forgot a constraint that should be included in the model. Which of the following is true?

a. If all solutions that satisfy the new constraint are in the original feasible region, the current optimal solution remains optimal for the model with the new constraint.

b. If the current optimal solution doesn't satisfy the new constraint, this solution can't be optimal for the model with the new constraint.

c. If the current optimal solution satisfies the new constraint, this solution remains optimal for the model with the new constraint.

d. All of these choices are true.

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