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: Medicine
[{'content': 'A 4 month pregnant lady on treatment with valproate regularly asked for your advice regarding taking the drug during pregnancy. What is the best course of action - \nSelect and explain. \nA. Immediately tape off valproate and start lamotrigine, B. Change to carbamazepine, C. Continue valproate and monitor blood levels, D. Slowly tape dose of valproate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]