This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hospital waste and disaster management, Occupational health, Subject name: Social & Preventive Medicine
The cancerogenic chemical that has a very long latent period is - 
Select and explain. 
A. Benzopyrine, B. Vinyl chloride, C. Asbestos, D. Estrogens
C: Asbestos
Answer: C: Asbestos 
Explanation: Asbestos exposure for a long period causes asbestosis. They entire the body through inhalation and are deposited in the alveoli. The long exposure of dust can lead to carcinoma of bronchus. (REF. PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 748)