The diagram illustrates the interior of a refrigerator. When the refrigerator is turned on for the first time, what occurs to the air close to the cooling unit?
- Athe particles of this air become smaller; the density of this air decreases
- Bthe particles of this air become smaller; the density of this air increases
- Cthe particles of this air move closer together; the density of this air decreases
- Dthe particles of this air move closer together; the density of this air increases