This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Placenta - Types and their complications, Subject name: Gynaecology & Obstetrics
[{'content': 'What type of placenta is this? \nSelect and explain. \nA. Monochorionic Diamniotic, B. Monochorionic Monoamniotic, C. Dichorionic Diamniotic, D. TTTS (Twin -to-twin transfusion syndrome)', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Placenta of MCMA twins (monochorionic and monoamniotic) * Single placenta with no dividing membrane between 2 umbilicial cords. * Cord entanglement is one of the specific complications seen with MCMA placenta. In above shown image, absence of dividing membrane gives a hint towards MCMA placenta.', 'role': 'assistant'}]