[单选题]
How much heat energy+j* 5x/ j m5lw yzvqjzrx9i(8y is needed to change 10 u3zz o7+z,gz8rkf3ntr e .f7nkg 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. $2.5 \times 10^{7} \; J$
