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': 'Which type of Twins have the highest moality : \nSelect and explain. \nA. Monoamniotic monochorionic, B. Diamniotic dichorionic, C. Binovular Twins, D. Siamese Twins', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Siamese Twins', 'role': 'assistant'}]