CHEMISTRY PLEASE HELP! An atom's electron configuration ends with 3p3. If another atom has nine more electrons, what would be the continuation of the electron configuration?

3p64s23d4
3p34s23d7
3p63d44s2
3p33d74s2

The characteristics of two different types of reactions are shown below:

Reaction A: Protons are gained or lost by the atom of an element.
Reaction B: Electrons are lost by the atoms of an element.

Which statement is true about the two reactions?

Valence electrons are not involved in both Reaction A and Reaction B.
Valence electrons are involved in Reaction B but not in Reaction A.
Valence electrons are involved in both Reaction A and Reaction B.
Valence electrons are involved in Reaction A but not in Reaction B.