Question

Photochemical smog is a resultant of the reaction among

A High concentration of NO₂, O₃ and CO in the evening.
B CO, CO₂, and NO₂ at low temperature.
C CO, O₂ and peroxy acetyl nitrate in the presence of Sunlight.
D NO₂, O₃ and peroxy acetyl nitrate in the presence of sunlight.
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