A liquid compressedin cylinder has a volume of 0.04 m$$^3$$ at 50 kg/cm$$^2$$ and a volume of 0.039 m$$^3$$ at 150 kg/cm$$^2$$. The bulk modulus of liquid is

A

400 kg/cm$$^2$$

B

4000 kg/cm$$^2$$

C

$$40 \times 10^5 kg/cm^2$$

D

$$40 \times 10^6 kg/cm^2$$