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Which of the following are genuine factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Varnished wooden furniture 5. Polyurethane products

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1. Which of the following are genuine factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Varnished wooden furniture 5. Polyurethane products

1, 2 and 3 only

2 and 4 only

1, 2, 3, 4 and 5

1, 3 and 4 only

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Which of the following are genuine factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Varnished wooden furniture 5. Polyurethane products

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