A neutron , an electron, a proton and an alpha particle are moving with the same kinetic energy. Which of the following is correct order of their speeds?
[A] Alpha Particle, Neutron, Proton, Electron [B] Electron, Proton , Neutron, Alpha Particle [C] Alpha Particle, Proton, Neutron, Electron [D] Neutron, Proton, Alpha Particle, Electron
