Consider a Max. problem and let , be the coefficient of x, in the optimal tableau's row 0. How does changing the objective function coefficient of a non-basic variable affects the optimal solution? A.. What?! It does not. B.. If the object function coefficient for a nonbasic variable r, is changed, the current basis remains optimal if c, 0. If c, > 0, then the current basis is no longer optimal, and r, will be a basic variable in the new optimal solution. C.. If the object function coefficient for a nonbasic variable x, is changed, the current basis remains optimal if the constraints are all binding constraints. If the constraints are nonbinding constraints then the current basis is no longer optimal, and r, will be a basic variable in the new optimal solution. D.. If the object function coefficient for a nonbasic variable r, is changed, the current basis remains optimal if, 20. If c,