Water of mass m gram is slowly heated to increase the temperature from $$T_{1}$$ to $$T_{2}$$ The change in entropy of the water, given specific heat of water is $$1Jkg^{-1}K^{-1}$$, is :

A

$$mln(\frac{T_{2}}{T_{1}})$$

B

zero

C

$$mln(\frac{T_{1}}{T_{2}})$$

D

$$m(T_{2}-T_{1})$$