This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Rigler's triad doesn't includes 
Select and explain. 
A. Pheumobilia, B. Ectopic stone, C. Cholangitis, D. Intestinal obstruction
C: Cholangitis
Answer: C: Cholangitis 
Explanation: Rigler's triad is a combination of findings on an abdominal radiograph of people with gallstone ileus,a condition where a large gallstone causes bowel obstruction.it consists of (a)Small bowel obstruction,(b)a gallstone outside the gallbladder(c)air in the bile ducts(pneumobilia). Reference:SRB's manual of surgery,5th edition,page no:649