A stationary object at $4°C$ and weighing $3.5\, kg$ falls from a height of $2000\, m$ on a snow mountain at  $0°C$. If the temperature of the object just before hitting the snow is $0°C$ and the object comes to rest immediately $(g = 10\,m/{s^2})$ and (latent heat of ice$ = 3.5 \times {10^5}\,joule/\sec $), then the object will melt

• A

  $2\, kg$ of ice

• B

  $200\, gm$ of ice

• C

  $20\, gm$ ice

• D

  $2\, gm$ of ice