1. (20 pts) The following apartments are 10 square feet each and have the following arrangement: The flow between departments is as follows: A A B 6 0 D 3 0 0 B 5 D Materials hauling cost is as follows: (Costo de acarreo de materiales es como sigue:) B A A 2 C D 0 3 1 0 0 2 B D 0 3 1 0 0 Using CRAFT, calculate the cost of the original arrangement. Using CRAFT calculate the cost if departments C and D are interchanged