Transportation problems It costs $\backslash (\backslash$$ $3\backslash )$ to repair a defective sensor from Supplier A and $\backslash (\backslash$$ $4\backslash )$ to repair a defective sensor from Supplier B$.$ What are the expected costs to repair the defective sensors from Suppliers A and B$?$

$5.$ Consider the following instance of the Transportation problem:

a$)$ Give the total cost associated with the following $($basic$)$ feasible shipping solution.

b$)$ Find the "network cost" of $($A$,2),$ i$.$e$.,$ the cost to ship from location A to location $2$ ising the links in the shipping solution. Is this cost larger or smaller than the cost of shipping directly from A to $2?$

c$)$ Perform a single "pivot" to find a new $($basic$)$ shipping solution that uses link $($A$,2).$