This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
Rasmussen's aneurysm involves? 
Select and explain. 
A. Bronchial aneurysm, B. Pulmonary aneurysm, C. Veebral aery, D. Posterior intercostal aery
B: Pulmonary aneurysm
Answer: B: Pulmonary aneurysm 
Explanation: In post primary pulmonary TB,hemoptysis can occur from rupture of a dilated vessel in a tuberculous cavity(Rasmussen's aneurysm) Reference:Harrison's medicine-18th edition,page no:1345.