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 D suddenly increases the number of required hours from 85 to 105. In solving the CONSULTANT PROBLEM, which of the following statements becomes true?

A. The problem is now infeasible.

B. The demand constraint for client D will have to be changed, but no new dummy supply node is needed.

C. The demand constraint for client D will have to be changed, but a new dummy supply node with capacity 20 is needed.

D. Nothing about the formulation needs to be changed.

2. THE CONSULTANT PROBLEM on your test is based on Problem 5: Page 293 from the book. The INITIAL problem network is shown below for your convenience. On your test, some of these problem parameters may be changed. PLEASE ALSO REFER TO THE PROBLEM ON PAGE 293 OF THE BOOK TO GET THE FULL PICTURE AND TO BE ABLE TO ANSWER ALL QUESTIONS ON THE TEST. WE WILL CALL THIS PROBLEM THE CONSULTANT PROBLEM ON YOUR TEST. IN ANSWERING THIS QUESTION ASSUME THAT: Avery Supply Node 1, Baker -Supply Node 2, Campbell- Supply Node 3. If a dummy supply node is ever added, it becomes supply node 4. Client A Demand node 1, Client B Demand node 2, Client C- Demand 3, Client D Demand &. So the objective funetion coeficient on flow are X23-115 DO Campbe