If a Side Constraint for a Network Flow Model Cannot

question 61

Multiple Choice

If a side constraint for a network flow model cannot be avoided,and non-integer solutions result,how can the solution be expressed as an integer solution?

• A)Force all the arc flow decision variables to be integer.
• B)Round off all the non-integer arc flow decision variables.
• C)Increase the supply until the solutions are all integer using a dummy supply node.
• D)Increase the demand until the solutions are all integer using a dummy demand node.

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