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What are the environmental issues regarding the manufacturing of plastics?

I. Escape of gaseous hydrocarbons, chlorine, and hydrogen chloride gas into the atmosphere.

II. Waste-water from the processes and wash-waters can carry pollutants.

III. Dioxins can be liberated due to mishaps in the process.

IV. Health and safety issue in the manufacture of PVC is the exposure of plant operators to Vinyl Chloride Monomer (VCM)

A)  I & II                           

B)  II & III

C)  Only IV                       

D)  All the above