General Medicine General 0e0981a0 A chest physician performs bronchoscopy in the procedure room of the out patient depament. To make the instrument safe for use in the next patient waiting outside, the most appropriate method to disinfect the endoscope is by: A 70% alcohol for 5 min B 2% glutaraldelyde for 20 min C 2% formaldehyde for 10 min D 1% sodium hypochlorite for 15 min