One mole of an ideal gas at 25'c expands in volume from 1.0L to 4.0L at constant temperature .what work (in J) is done if the gas expands against vacuum (P_external  =0)?

• A

  $-4.0\times {10}^2$

• B

  $-3.0\times {10}^2$

• C

  $-1.0\times {10}^2$

• D

  Zero