This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiration, Subject name: Pathology
Which of the following causes malignant mesothelioma? 
Select and explain. 
A. Smoking, B. Asbestosis, C. Silicosis, D. Pneumoconiosis
B: Asbestosis
Answer: B: Asbestosis 
Explanation: Ans. (b) Asbestosis(Ref: Robbins 9th/pg 723-724)Malignant mesothelioma is associated with Asbestosis. Smoking does NOT increase the risk of malignat mesothelioma.