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: Gynaecology & Obstetrics
[{'content': 'Only indication for internal version nowadays is: \nSelect and explain. \nA. Brow presentation, B. Face presentation, C. Second fetus of twins, D. Breech', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Second fetus of twins', 'role': 'assistant'}]