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: Pediatrics
[{'content': 'The most common anomaly seen in the fetus of a mother taking lithum carbonate is - \nSelect and explain. \nA. Cardiac deformities, B. Neural tube defect, C. Limb reduction, D. Genitourinary de formi ties', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cardiac deformities o It causes Ebstein anomaly.", 'role': 'assistant'}]