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': "Lithium is used in a pregnant woman. Which of the following congenital anomaly occurs in the fetus? \nSelect and explain. \nA. Tetralogy of Fallot, B. Bicuspid atresia, C. Ebstein's anomaly, D. Pulmonary stenosis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]