In linear programming models of real problems, the occurrence of an unbounded solution means that the
a. resultant values of the decision variables have no bounds.
b. mathematical models sufficiently represent the real-world problems.
c. problem formulation is improper.
d. constraints have been excessively used in modeling.
c
RATIONALE: In linear programming models of real problems, the occurrence of an unbounded solution means that the problem has been improperly formulated.
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