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': 'Loud P2 is found in ? \nSelect and explain. \nA. Pulmonary HTN, B. MS, C. MR, D. Aoic incompetence', 'role': 'user'}, {'content': "Answer: A \nExplanation: Answer- A. Pulmonary HTNPulmonary hypeension unless proved otherwise.Eisenmenger's syndrome due to ASD, VSD, PDA.Multiple pulmonary thrombi", 'role': 'assistant'}]