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: Anatomy
[{'content': 'The commonest anatomical position of the appendix is- \nSelect and explain. \nA. Retrocaecal, B. Pelvic, C. Paracaecal, D. Preileal', 'role': 'user'}, {'content': "Answer: A \nExplanation: The most common position of the appendix is retrocaecal (12 O'clock).", 'role': 'assistant'}]