Answer this question with respect to the CONSULTANT PROBLEM posted in Canvas $($Test $6$ Output document above$).$ Any proposed changes to the CONSULTANT PROBLEM pertain only to that problem. Do not carry forward changes made in one problem to another problem. Assume that Client C suddenly increases the number of required hours from $100$ to $140.$ In solving the CONSULTANT PROBLEM, which of the following statements becomes true?

Group of answer choices

A dummy supply node will have to be added. The dummy supply $(=$ node $4)$ will have a total supply of $20$ hours.

A dummy supply node with a supply of $140$ hours will have to be added.

The profit from the Baker$-$Client C arc changes now in the objective function.

Nothing changes. The old optimal solution is still valid.