An Ice Cube at 0°C Melts in a Swimming Pool

An ice cube at 0°C melts in a swimming pool at 20°C. What is the change in the entropy of the universe as a result? The ice cube was 1.00 inch on a side. Assume ice has a density of 0.917 g/cm³ and that the enthalpy of fusion of water is 6.01 kJ/mol.

A) +1.3 J/K
B) -1.3 J/K
C) 0.0 J/K
D) +18.4 J/K
E) +7.9 J/K