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Standard air is air at

[A].	Atmospheric conditions at any specific location	[B].	1 kg/cm2 and atmospheric temperature (Relative humidity of 64%)
[C].	1 kg/cm2 and 20?C (Relative humidity of 36%)	[D].	1 kg/cm2 and 0?C (Relative humidity of 36%)
[E].	None of the above

Answer: Option A