Which of the following statements is true about photochemical smog?

1.	Which of the following statements is true about photochemical smog?
A.	It is reducing in nature.
B.	It is formed in winter.
C.	It is a sulphurous smog.
D.	Components of the smog, NO and \[{{O}_{3}}\], irritate the nose and throat and their high concentration causes headache, chest pain, dryness of the throat, cough and difficulty in breathing.
Answer» E.

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Which of the following statements is true about photochemical smog?

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