Mercy Hospital is located in a large metropolitan city. The Radiology Department is investigating purchasing a new updated ultrasound machine and replacing an older ultrasound machine. The new ultrasound machine would provide lower costs and higher quality ultrasounds. It would also use a new laser printer to produce clear images and require less power. Instead of investing the funds in the new ultrasound machine, the Laboratory Department is persuading the hospital's management to buy a new X-ray machine. Required: Classify each item as a differential cost, a sunk cost, or an opportunity cost in the decision to replace the old ultrasound machine with a new machine. If none of the categories apply for a particular item, select "None". Item Ex. Cost of ultrasound film used in the old machine 1. Cost of the old ultrasound machine 2. The salary of the head of the Radiology Department 3. The salary of the head of the Laboratory Department 4. Cost of the new color laser printer 5. Rent on the space occupied by Radiology 6. The cost of maintaining the old machine 7. Benefits from a new X-ray machine 8. Cost of electricity to run the ultrasound machines Cost Differential Cost