If a sample of a radioactive isotope decays through $\alpha$-particle emission, the $\alpha$-particles produced all possess one fixed, discrete energy. If a sample of a radioactive isotope decays through $\beta$-particle emission, the $\beta^{-}$ particles produced have energies spread continuously over a range. What accounts for this difference?
- AAn antineutrino is emitted with a $\beta^{-}$ particle but not with an $\alpha$-particle.
- BAn antineutrino is emitted with an $\alpha$-particle but not with a $\beta^{-}$ particle.
- CThe $\alpha$-particles have much more energy than the $\beta^{-}$ particles.
- DThe $\beta^{-}$ particles have much more energy than the $\alpha$-particles.