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: Radiology
Rasmussen's aneurysm which artery is involved 
Select and explain. 
A. Pulmonary artery, B. Bronchial artery, C. Vertebral artery, D. Posterior intercostal artery
A: Pulmonary artery
Answer: A: Pulmonary artery 
Explanation: It is Pseudo-aneurysmal dilatation of a branch of pulmonary artery adjacent to a tuberculous cavity.