Consider the following network problem.

NetworkFinal

The numbers on the arcs represent the shipment cost between nodes.

Which nodes are supply nodes? $(2$ points$)$

How much supply can the source nodes provide? $(2$ point$)$

Which nodes are demand nodes? $(2$ points$)$

How much demand exists in the demand node? $(2$ point$)$

Model this network problem; define decision variables, objective function and constraints clearly. $(8$ points$)$

Question $5$ options: