At a temperature of 500 kelvins, 6 liters of an ideal gas had a pressure of 300 newtons
per square meter. If the temperature was reduced to 250 kelvins, and the volume raised
to 9 liters, what was the resulting pressure ?
(A) 100 newtons/m^2
(B) 150 newtons/m^2
(C) 450 newtons/m^2
(D) 900 newtons/m^2
(E) none of these