Why is an alpha particle written as a helium (He) nucleus?

Question

A. An alpha particle has two protons and two neutrons; it is essentially the nucleus of a helium atom.

B. Helium is a common element that is often present in small forms; the alpha particle was misidentified in early scientific studies as helium.

C. An alpha particle is a stable, non-reactive particle, like the noble gas helium.

D. An alpha particle has two electrons; it is essentially an atom of helium.

I think it is A

Answer 1

I think you are right.

Answer 2

thank you