If the Average Speed of a Water Molecule at 25 ^$\omicron$

Multiple Choice

If the average speed of a water molecule at 25 ^$\omicron$ C is 640 m.s^-1, what is the average speed at 100 ^$\circ$ C?

A) 572 m.s^-1
B) 5120 m.s^-1
C) 801 m.s^-1
D) 320 m.s^-1
E) 1280 m.s^-1