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 dust exposure has been linked to the development of mesothelioma? 
Select and explain. 
A. Asbestos, B. Barium, C. Silica, D. Cotton
A: Asbestos
Answer: A: Asbestos 
Explanation: Ans. is 'a' i.e., Asbestos * Asbestos exposure can cause lung cancer (most common neoplasm associated with asbestos); mesothelioma of pleural peritoneum (most specific neoplasm associated with asbestos); laryngeal carcinoma, colon carcinoma and stomach adenocarcinoma.* Simian virus 40 (SV 40) viral DNA has also been associated with malignant mesothelioma