Question: Using the simplex method for maximization problem, we know we have an optimal solution when. Select one: a . all the real variables have a

Using the simplex method for maximization problem, we know we have an optimal solution when. Select one: a. all the real variables have a nonzero value. b. the Zj - Cj row (also called Z row) has no negative values. c. all slack variables have a zero value. d. all basic variables are negative.

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