This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2018, Subject name: Gynaecology & Obstetrics
[{'content': 'Twin peak sign seen in \nSelect and explain. \nA. Monochorionic Monoamniotic, B. Monochorionic Diamniotic, C. Dichorionic Diamniotic, D. Dichorionic Monoamniotic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Twin peak or lambda sign it is characterized of dichorionic pregnancies and is due to the chorionic tissue between the two layers of the intewin membrane at the placental origin . twin peak appears as a triangle with base at chorionic surface and apex in intewin membrane.', 'role': 'assistant'}]