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: Pathology
[{'content': "Least dangerous in pregnancy? \nSelect and explain. \nA. Ebstein's anomaly, B. Pulmonary hypeension, C. Cyanotic hea disease, D. Marfan syndrome", 'role': 'user'}, {'content': "Answer: A \nExplanation: (Refer: William's Obstetrics, 23rd edition, pg no: 280, 281)(Refer: Mudaliar and Menon&;s Clinical Obstetrics, 11th edition, pg no- 237)", 'role': 'assistant'}]