Calculate the heat energy required to convert completely 10 kg of water at 50°C into steam at 100°C, given that the specific heat capacity of water is 4200 J/(kg°C) and the specific latent heat of vaporisation of water is 2260 kJ/kg.

A. 340451 KJ
B. 60562 KJ
C. 72103 KJ
D. 24700 KJ