If the pressure on a body is increased from 200 kPa to 250 kPa, the volume of the body decreases by $0.25 \%$. The compressibility of the material of the body is (in $\mathrm{m}^2 \mathrm{~N}^{-1}$ )

• A

  $2 \times 10^7$
• B

  $2 \times 10^{-7}$
• C

  $5 \times 10^8$
• Correct answer
  D

  $5 \times 10^{-8}$

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