Exercise $1-5($Static$)$ Differential, Sunk, and Opportunity Costs $[$LO$1-5]$

Northeast Hospital's Radiology Department Is considering replacing an old inefficient $x-$ray machine with a state$-$of$-$the$-$art digital $x-$ray machine. The new machine would provide higher quality $x-$rays in less time and at a lower cost per $x-$ray. It also requires less power and would use a color laser printer to produce easily readable $x-$ray images. Instead of Investing the funds in the new $x-$ray machine, the Laboratory Department is lobbying the hospital's management to buy a new DNA analyzer.

Required:

Classify each item as a differential cost, a sunk cost, or an opportunity cost in the decision to replace the old X$-$ray machine with a new machine. If none of the categories apply for a particular item, select "None".

$\backslash$table$[[$Item$,],[$Example: Cost of X$-$ray film used in the old machine,Differential Cost$],[1.$ Cost of the old X$-$ray 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 digital X$-$ray machine,$],[5.$ Rent on the space occupied by Radiology,$],[6.$ The cost of maintaining the old machine,$],[7.$ Benefits from a new DNA analyzer,$],[8.$ Cost of electricity to run the X$-$ray machines,$]]$