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PLEASE HELP

Which of the following is an example of the clean technique?

A. Gilberto places used sharps in a biohazard container for the
incinerator.
B. Ben sends all used scalpels to a department that washes them
with an autoclave.
C. Melissa washes a patient's cut thoroughly before bandaging it.
D. Trisha places a drape over each patient before surgery.