One kilogram of ice at `0^(@)C` is mixed with one kilogram of water at `80^(@)C`. The final temperature of the mixture is
(Take : specific heat of water `=4200 J kg^(-1) K^(-1)`, latent heat of ice `= 336 kJ//kg^(-1)`)
A. `40^(@)C`
B. `60^(@)C`
C. `0^(@)C`
D. `50^(@)C`