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
Loud P2 is found in ? 
Select and explain. 
A. Pulmonary HTN, B. MS, C. MR, D. Aoic incompetence
A: Pulmonary HTN
Answer: A: Pulmonary HTN 
Explanation: Answer- A. Pulmonary HTNPulmonary hypeension unless proved otherwise.Eisenmenger's syndrome due to ASD, VSD, PDA.Multiple pulmonary thrombi