[单选题]
A carbon-14 nucleus decays thucrnkto 75l tb,kw70n 8/t/.mh 7qlcq g4hf e.c5u6xo a nitrogen-14 nucleus by beta decay. How much energy (in MeV) is released if carbon-14 hq .45chg6xue fas a mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u?
A. $0.0157 \; MeV$
B. $0.157 \; MeV$
C. $1.57 \; MeV$
D. $15.7 \; MeV$