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 of the following is false regarding laminaria tent as a contraceptive? \nSelect and explain. \nA. It is made from seaweed, B. It is placed in the posterior fornix, C. It is used for the dilatation of the cervix, D. It has got a thread to facilitate removal', 'role': 'user'}, {'content': "Answer: B \nExplanation: Laminaria tent is made from seaweed and is intensely hygroscopic. It when placed in the cervix expands due to the hygroscopic action resulting in dilation of the cervix. Ref: Mudaliar and Menon's Clinical Obstetrics, 9th Edition, Page 517.", 'role': 'assistant'}]