The following network diagram represents a minimum cost transshipment problem.

qa$\mathrm{.}1.$jpg

Assume that X$\_$IJ is represents the quantity shipped from node I to node J$.$

Which of the following statements are true?

Group of answer choices

None of the answers are correct.

There will be two constraints with exactly $4$ decision variables.

Both X$\_$CE and X$\_$EC will be decision variables in this problem.

The objective function contains a term $"+5*$X$\_$CB$"$ among others.

All constraints will be binding $($zero slack$)$ at the optimal solution.