[单选题]
How much heat energy is nexyq tki : s,4o-l/jzqls+ k5,peded to changam9cq+io3c1xfdk / 8ge 10 kg of water at $50 \; ^{\circ}C$ to steam at $120 \; ^{\circ}C$?
A. $4.2 \times 10^{5} \; J$
B. $2.3 \times 10^{7} \; J$
C. $4.2 \times 10^{6} \; J$
D. $2.5 \times 10^{7} \; J$
