Variable Cells Constraints 21. If the right-hand side of Resource C is increased by 40 , and the right-hand side of Resource B is decreased by 20 , then:. (A) the optimal solution remains the same. (B) the optimal solution will change. (C) the shadow price is valid. (D) the shadow price may or may not be not valid. (E) None of the above. 22. A parameter analysis report can be used to investigate the changes in how many data cells at a time? . (A) 1 (B) 2 (C) 3 (D) All of the above. (E) A or B 23. Which of the following is an example of a transshipment node? () (A) Storage facilities. (B) Processing facilities. (C) Short-term investment options. (D) Warehouses. (E) All of the above. 24. For a minimum cost flow problem to have a feasible solution, which of the following (A) There is the same number of supply nodes and demand nodes. (B) There is only one supply node and one demand node. (C) There is an equal amount of supply and demand. (D) The supply and demand must be integers. (E) The transshipment nodes must be able to absorb flow