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If the coefficient of the first decision variable in the objective function increases but the increase is less than the allowable increase, while
If the coefficient of the first decision variable in the objective function increases but the increase is less than the allowable increase, while keeping the coefficient of the second decision variable the current value, then the optimal solution
will remain the same but the objective function value changes.
will change but the objective function value will remain the same.
will change but the objective function value will increase.
will remain the same and the objective function value will remain the same.