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: Pathology
Anthracosis is due to inhalation of 
Select and explain. 
A. Coal dust, B. Asbestos dust, C. Silica dust, D. Beryllium dust
A: Coal dust
Answer: A: Coal dust 
Explanation: None