This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Radiology
[{'content': 'Prunning of pulmonary aeries is seen in - \nSelect and explain. \nA. Pulmonary hypeension, B. Chronic bronchitis, C. Pulmonary infections, D. Pulmonary transplant', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pulmonary Aerial Hypeension is characterised by enlargement of main pulmonary trunk and Right and Left main pulmonary aeries with dispropoinately small peripheral blood vessels. This is referred to as prunning of pulmonary aeries.. * elevated cardiac apex due to right ventricular hyperophy * enlarged right atrium * prominent pulmonary outflow tract * enlarged pulmonary aeries * pruning of peripheral pulmonary vessels', 'role': 'assistant'}]