This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'The following teratogenic effect is produced by \nSelect and explain. \nA. Propylthiouracil, B. Carbimazole, C. Valproate, D. Phenytoin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The picture shows scalp defect-aplasia cutis which is a teratogenic effect of carbimazoleRef: KD Tripathi 7th ed pg 253', 'role': 'assistant'}]