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: Surgery
Resting Tone of Rectum is decreased in all except 
Select and explain. 
A. Micturation, B. Retained feaces in the rectum, C. Prolapse rectum, D. Trauma involving the perineum
B: Retained feaces in the rectum
Answer: B: Retained feaces in the rectum 
Explanation: None