A Sample of Neon Gas at 20 °C Is Confined

A sample of neon gas at 20 °C is confined to a cylinder with a movable piston.The gas is then heated until its pressure is doubled.What is the final temperature of the gas?

A) 10 °C
B) 40 °C
C) 313 °C
D) 586 °C
E) This cannot be found since the final and initial volumes are unknown.