Inversion of temperature in the troposphere occurs when 1. Nights are short 2. Sky is covered with clouds 3. Weather is stable 4. Air is dry Which of the above factors are correct?

Inversion of temperature in the troposphere occurs when 1. Nights are

1.	Inversion of temperature in the troposphere occurs when 1. Nights are short 2. Sky is covered with clouds 3. Weather is stable 4. Air is dry Which of the above factors are correct?
A.	1 and 2 only
B.	2 and 3 only
C.	3 and 4 only
D.	1 and 4 only
Answer» D. 1 and 4 only