A Certain Ideal Gas Has a Temperature 300 K and a Pressure

A certain ideal gas has a temperature 300 K and a pressure 5.0 *10⁴ Pa. The molecules have a mean free path of 4.0 *10^-7m. If the temperature is raised to 350 K and the pressure is reduced to 1.0 * 10⁴ Pa the mean free path is them:

A) 6.9 * 10^-8m
B) 9.3 *10 ^{- 8}m
C) 3.3 * 10 ^-7m
D) 1.7 *10^-6m
E) 2.3 *10^-6m