Free Neutrons (Unlike Those in the Nucleus of an Atom)decay

Multiple Choice

Free neutrons (unlike those in the nucleus of an atom) decay spontaneously into a proton,an electron,and an antineutrino.The masses of these particles are (approx. ) :
mn = 1.67492 × 10^-27 kg
Mp = 1.67262 × 10^-27 kg
Me = 9.10939 × 10^-31 kg
The mass of the neutrino is zero (or nearly so) .How much energy is released in this decay?

A) 1.01 × 10^-14 J
B) 1.25 × 10^-13 J
C) 4.66 × 10^-12 J
D) 7.08 × 10^-13 J
E) 5.61 × 10^-12 J