Which Action(s)will Decrease the Equilibrium Concentration of an Inert Gas

Which action(s) will decrease the equilibrium concentration of an inert gas (such as N₂) in water?
1) decreasing the temperature of the water
2) increasing the volume of water
3) decreasing the pressure of the gas above the liquid

A) 1 only
B) 2 only
C) 3 only
D) 1 and 3
E) 1,2,and 3