Which of the following are the reasons/factors for exposure to benzene pollution?
1. Automobile exhaust
2. Tobacco smoke
3. Wood burning
4. Using varnished wooden furniture
5. Using products made of polyurethane

Select the correct answer using the code given below :

The correct answer is (A) (a) 1, 2 and 3 only.

Explanation:

Statement 1 is correct: Human exposure to benzene has been associated with a range of acute and long-term adverse health effects and diseases, including cancer and aplastic anemia. Exposure can occur occupationally and domestically as a result of the ubiquitous use of benzene-containing petroleum products, including motor fuels and solvents. Automobile exhaust accounts for the largest source of benzene pollution in the general environment. Statement 2 is correct: Active and passive exposure to tobacco smoke is also a significant source of exposure to benzene pollution. Statement 3 is correct: Wood burning is also a source of benzene pollution.