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
Bagassosis is occupational lung disease caused by: 
Select and explain. 
A. Carbon dioxide., B. Sugarcane dust., C. Cotton fibre particles., D. Mouldy hay.
B: Sugarcane dust.
Answer: B: Sugarcane dust. 
Explanation: None