Which Are Methods Used to Protect Against Biohazard Contamination from Impressions

Multiple Choice

Which are methods used to protect against biohazard contamination from impressions?

A) Disinfecting impressions in the treatment room before bringing them to the laboratory
B) Disinfecting laboratory benches and other contaminated items after use
C) Disinfecting laboratory benches and other contaminated items before use
D) All are methods that can reduce contamination from impressions.