The density of ice x ${\mathrm{gcm}}^{-3}$ and that of water is y ${\mathrm{gcm}}^{-3}$.What is the change in volume when m g of ice melts?

• A

  m(y-x) ${\mathrm{cm}}^3$

• B

  $\frac{\mathrm{y}-\mathrm{x}}{\mathrm{m}}$${\mathrm{cm}}^3$

• C

  $\mathrm{mxy}(\mathrm{x}-\mathrm{y})$${\mathrm{cm}}^3$

• D

  $\mathrm{m}(\frac{1}{\mathrm{y}}-\frac{1}{\mathrm{x}}){\mathrm{cm}}^3.$${\mathrm{cm}}^3$