An alternative optimal solution is indicated when in the simplex tableau A) a non-basic variable has a value of zero in the c_j − z_j row. B) a basic variable has a positive value in the c_j − z_j row. C) a basic variable has a value of zero in the c_j − z_j row. D) a non-basic variable has a positive value in the c_j − z_j row.

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An alternative optimal solution is indicated when a non-basic variable has a value of zero in the c_j − z_j row. This means that the non-basic variable can be brought into the basis without changing the value of the objective function.

An Alternative Optimal Solution Is Indicated When in the Simplex