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': 'Drug causing phacomelia? \nSelect and explain. \nA. Phenytoin, B. Alcohol, C. Lithium, D. Thalidomide', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Thalidomide o Even a single dose of thalidomide administered early in pregnancy may result in severe teratogenic effect in the form of phacomelia.", 'role': 'assistant'}]