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 appendix is \nSelect and explain. \nA. Retrocaecal, B. Pelvic, C. Paracaecal, D. Preileal', 'role': 'user'}, {'content': "Answer: A \nExplanation: A. i.e. Retrocaecal- Vermiform appendix develops from midgut loops, is supplied by appendicular branch of ileocolic aery. It has mesoappendix (mesentery) but no teniaMost common posiion of vermiform appendix is retrocecal (12 o'clock = 65%) followed by pelvic or 4 o'clock positions", 'role': 'assistant'}]