This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rectum, Subject name: Surgery
Flexible sigmoidoscope is .........cm length: 
Select and explain. 
A. 30 cm, B. 40 cm, C. 60 cm, D. 70 cm
C: 60 cm
Answer: C: 60 cm 
Explanation: Ans. (c) 60cmRef: Bailey 26th Edition, Page 1217The image from Bailey demonstrates all the scope lengths:* Proctoscope: 8cm* Per rectal examination: 12cm* Sigmoidoscope (Rigid): 18cm* Sigmoidoscope (Flexible): 60cm* Colonoscope: 160cm