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: Pharmacology
[{'content': 'Most common cause of Mobius syndrome is by use of which of the following drug in pregnancy ? \nSelect and explain. \nA. Misoprostol, B. Thalidomide, C. Methotrexate, D. Dinoprostone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mobius syndrome is extremely rare congenital condition characterized by facial paralysis and inability to move the eye laterally (abbduction). It results due to paralysis of sixth\xa0and seventh cranial nerves, important causes of this\xa0syndrome are:\n\nBirth trauma\nUse of misoprostol in mother during pregnancy\nUse of thalidomide in mother during pregnancy\nUse of cocaine in mother during pregnancy', 'role': 'assistant'}]