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: Social & Preventive Medicine
Silicosis occurs with 
Select and explain. 
A. Cotton, B. Silica fibres, C. Sugarcane fibres, D. Carbon particles
B: Silica fibres
Answer: B: Silica fibres 
Explanation: None