The specific heat of water = 4200 J kg−1 K−1 and the latent heat of ice = 3.4×105 J kg−1 . 100 grams of ice at 0∘C is placed in 200 g of water at 25∘C . The amount of ice that will melt as the temperature of water reaches 0∘C is close to (in grams):
a. 61.7
b. 63.8
c. 69.3
d. 64.6