Select the correct statements among the following : A. Slow...

(A) Slow neutron can cause fission in ${ }_{92}^{235} \mathrm{U}$ than fast neutrons because fast neutrons are too quick so they scatter of atoms instead of being captured by them (B) $\alpha$-rays are Helium nuclei, is a true statement (C) $\beta$-rays are generated when neutron is converted into proton by releasing electron or proton is converted into neutron by releasing positron. (D) $\gamma$-rays have higher energies as compared to X -rays. So they have smaller wavelength as compared to X-rays.