This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Irradiation can be used to sterilize A/E 
Select and explain. 
A. Bone graft, B. Suture, C. Aificial tissue graft, D. Bronchoscope
D: Bronchoscope
Answer: D: Bronchoscope 
Explanation: Bronchoscope Endoscopes are sterilized by chemical methods Methods for sterilization of endoscopes - Rigid endoscope -4 Autoclave - Flexible -3 Glutaraldehyde peracetic acid Nowdays musculoskeletal tissue allografts are being increasingly used for knee reconstructive procedures. The soft tissue allografts commonly being used are bone patellaendon-bone, Achillestendon, fascia lata, anterior and posterior tibial tendon. Infections with allografts is a serious concern. Therefore these allografts need proper sterilization and disinfection. The proper sterilization procedure for these allografts is Gamma/Electron beam irradiation.