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

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An alternative optimal solution is indicated in the simplex tableau when a nonbasic variable has a coefficient of zero in the objective function row (often referred to as the $c_j - z_j$ row). This means that introducing this variable into the basis will not change the objective value, suggesting the existence of another optimal solution.

An Alternative Optimal Solution Is Indicated When,in the Simplex Tableau,a