Radium-226 decays into radon-222 plus an alpha particle. How much energy is released in this process? 1u=931.494 MeV/c². The relevant mass values are: ⁴He, 4.002603 u; ²²²Rn, 222.017570 u; ²²⁶Ra, 226.025402 u. The energy values are:
A. 4.24 MeV,
B. 3.76 MeV,
C. 4.87 MeV,
D. 5.05 MeV,
E. 5.39 MeV.