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: Forensic Medicine
[{'content': 'Shape of nulliparous cervix is: AI 07 \nSelect and explain. \nA. Conical, B. Circular, C. Longitudinal, D. Cylindrical', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Conical', 'role': 'assistant'}]