This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Multiple Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Me type of conjoined twin is: \nSelect and explain. \nA. Throracopagus, B. Craniopagus, C. Pyopagus, D. Ischiopagus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Throracopagus', 'role': 'assistant'}]