This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Most common position of vermiform appendix: \nSelect and explain. \nA. Preileal, B. Retrocecal, C. Pelvic, D. Postileal', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (B) RetrocecalRef: Bailey 26th edition, Page 1199* Most common position is retrocecal--60%* 2nd common position--pelvic 20%', 'role': 'assistant'}]