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
Corpulmonale is heart disease due to: 
Select and explain. 
A. COPD affecting right ventricle, B. Left ventricular failure, C. Pericardial effusion, D. None of the above
A: COPD affecting right ventricle
Answer: A: COPD affecting right ventricle 
Explanation: None