Rutherfords experiments , which established the nuclear model of atom , used a beam of:-
A. `beta`-particles , which impinged on a mental foil and get absorbed.
B. `gamma`- rays, which impinged on metal foil and ejected electron .
C. Helium atoms, which impinged on a metal foil and got scattered.
D. Helium nuclei, which impinged on a metal foil and got scattered.
