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': 'Oral contraceptives pills predisposes to which of the following: March 2011 \nSelect and explain. \nA. Asthma, B. Cerebral stroke, C. Peripheral neuropathy, D. Ovarian carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Cerebral stroke Pulmonary embolism and cerebral thrombosis, both venous and aerial, are 7-10 times more frequent in the pill users than in the non-users', 'role': 'assistant'}]