This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Human placenta is best described as : \nSelect and explain. \nA. Discoid, B. Hemochorial, C. Deciduate, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: is hemochorial because of direct contact of chorion with maternal blood deciduate because some maternal tissue is shed at paurition A discoid placenta is placenta with flat circular shape and in which the chorionic villi are arranged in a circular plate. Reference: Dutta's Textbook of Obstetrics 7th edition page 28", 'role': 'assistant'}]