Human breath is visible in winter but not in summer because—

1.	Human breath is visible in winter but not in summer because—
A.	The difference in outside pressure gives visibility to breath
B.	Breath contains certain impurities and visible matters
C.	Water vapour in breath condenses in cold air, making it visible
D.	Breath has heat in it which evaporates in cold air giving visibility
E.	None of these
Answer» E. None of these

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