Two Moles of an Ideal Gas Are Held at a Constant

Two moles of an ideal gas are held at a constant volume of 3 liters.The change in pressure if the temperature increases by 150 ^$\circ$ C is

A) 1 atm.
B) 2 atm.
C) 4 atm.
D) 6 atm.
E) 8 atm.