Knowing that the atomic masses of $$^{25}_{13}\mathrm{Al}$$ and $$^{25}_{12}\mathrm{Mg}$$ are respectively $$24.990432\,\text{u}$$ and $$24.985839\,\text{u}$$ while electron mass is often expressed as $$m_e = 0.511\,\text{MeV}$$, the $$Q$$ value, energy liberated, of the $$\beta$$ decay nuclear reaction $$^{25}\mathrm{Al} \rightarrow {}^{25}\mathrm{Mg} + e^+ + \nu$$ in $$\text{MeV}$$ is

A

4.278

B

3.767

C

3.256

D

931.478