This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pathology
Ferruginous bodies are seen in - 
Select and explain. 
A. Silicosis, B. Bysinosis, C. Asbestosis, D. Baggassosis
C: Asbestosis
Answer: C: Asbestosis 
Explanation: Ref:Textbook of pathology (Harsh mohan) 6th edition, page no.492 Histologically there is presence of characteristic asbestos bodies in the involved areas . These are asbestos fibres coated with glycoprotein and haemosiderin and appear beaded or dumbbell-shaped. The coating stains positively for Prussian blue reaction.