Pick up the correct statement

1.	Pick up the correct statement
Answer» CO which is a major pollutant RESULTING from the combustion of fuels in automobiles plays a major ROLE in photochemical smog Classical smog has an oxidizing character while the photochemical smog is reducing in character Photochemical smog occurs in day time whereas the classical smog occurs in the morning hours During formation of smog occurs in the morning hours During formation of smog the level of ozone in the atmosphere GOES down Answer :C

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