A ball falling in a lake of $\mathrm{200 }\mathrm{m}$ shows a decrease of $0.1\mathrm{ }\mathrm{\%}$ in its volume. The Bulk modulus of elasticity of the material of the ball is (take $\mathrm{g}=10\mathrm{ }\mathrm{m} {\mathrm{s}}^{-2}\mathrm{ }$)

• A

  $10^9\mathrm{ }\mathrm{N} {\mathrm{m}}^{-2}\mathrm{ }$
• Correct answer
  B

  $2\times {10}^9\mathrm{ }\mathrm{N} {\mathrm{m}}^{-2}\mathrm{ }$
• C

  $3\times {10}^9\mathrm{ }\mathrm{N} {\mathrm{m}}^{-2}\mathrm{ }$
• D

  $4\times {10}^9\mathrm{ }\mathrm{N} {\mathrm{m}}^{-2}\mathrm{ }$

Hence, the correct answer is option: 'B'.