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
B/L ronchi are seen in -a) Pulmonary edemab) Pulmonary emobolismc) Bronchiectasisd) Pulmonary AV fistula 
Select and explain. 
A. a, B. ac, C. ad, D. b
B: ac
Answer: B: ac 
Explanation: None