A metal block is experiencing an atmospheric pressure of ${10}^5{\mathrm{Nm}}^{-2}$.When the same block is placed in a vacuum chamber, the fractional change in its volume, is (the bulk modulus of metal is $\left(1.25\times {10}^{11}{\mathrm{Nm}}^{-2}\right)$)

• A

  $4\times {10}^{-7}$

• B

  $2\times {10}^{-7}$

• C

  $8\times {10}^{-7}$

• D

  $1\times {10}^{-7}$