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 *0 10⁴ Pa.The molecules have a mean free path of 4.0 *10 ^{- 7}m.If the temperature is raised to 350 K and the pressure is reduced to 1.0 * 10⁴ Pa the mean free path is then:

A) 6.9 *10 ^{- 8} m
B) 9.3 *10 ^{- 8} m
C) 3.4 *10 ^{- 7} m
D) 1.7 *10 ^{- 6} m
E) 2.3 *10 ^{- 6} m