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': 'A patient with recent–onset primary generalized epilepsy develops drug reaction and skin rash due to phenytoin sodium. The most appropriate course of action is : \nSelect and explain. \nA. Shift to clonazepam, B. Restart phenytoin sodium after 2 weeks, C. Shift to sodium valproate, D. Shift to ethosuximide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]