How does the gas propellant move when an aerosol can is used?

from a region of high pressure to a region of lower pressure
from a region of high pressure to a region of equally high pressure
from a region of low pressure to a region of higher pressure
from a region of low pressure to a region of equally low pressure

Question

How does the gas propellant move when an aerosol can is used?

 	
	from a region of high pressure to a region of lower pressure
	from a region of high pressure to a region of equally high pressure
	from a region of low pressure to a region of higher pressure
	from a region of low pressure to a region of equally low pressure

accessdenied · Answer

The gas inside an aerosol can is under considerably high pressure.  This is much greater than the pressure of our atmosphere which it is being released into.