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
In cholangitis, the organism mostly responsible is - 
Select and explain. 
A. E.Coli, B. Streptococcus, C. E. Histolytica, D. Clostridium
A: E.Coli
Answer: A: E.Coli 
Explanation: None