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: Skin
[{'content': 'Exanthema is caused by which drug ? \nSelect and explain. \nA. Phenytoin, B. Valproate, C. Digoxin, D. NTG', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Phenytoin", 'role': 'assistant'}]