When a technician needs to troubleshoot a powered laser unit, which of the fol owing safety
guidelines must they adhere to?

A.
Remove all jewelry and do not place any reflective objects in the laser path.

B.
Securely tape open the laser shutter and remove the photoconductor unit.

C.
Remove all safety door switches from the laser unit.

D.
Remove all jewelry and remove the photoconductor.