The following mechanism has an unreasonable step.Indicate which step is unreasonable,and explain why. 
Definitions:
EKGs
Electrocardiograms, which are tests that measure the electrical activity of the heart to detect heart problems.
Aseptic Technique
A set of specific practices and procedures performed under carefully controlled conditions with the aim to minimize contamination by pathogens.
Chronological Résumé
The type of résumé used by individuals who have job experience. Jobs are listed according to date, with the most recent listed first.
Functional
Capable of operating or serving a purpose in the intended or expected way.
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