If 2 kg mass of water, with specific heat of 4.18 kJ/kg-k is heated from 20℃ to 40℃ in an open container, then the change in entropy of water in kJ/K is

(A) 0.5 to 0.53

(B) 0.45 to 0.47

(C) 0.54 to 0.56

(D) 0.6 to 0.62