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
Which of the following is a cause of unilateral hyperlucent lung on chest radiography? 
Select and explain. 
A. Poland syndrome, B. Asthma, C. Acute bronchiolitis, D. Pleural effusion
A: Poland syndrome
Answer: A: Poland syndrome 
Explanation: Poland's syndrome (unilateral congenital absence of pectoral muscles) causes unilateral hypertranslucency.
Asthma & acute bronchiolitis cause bilateral hypertranslucency.