Which among the following electronic configurations belong to main group elements?
A. [Ne]$3s^1$ B. [Ar]$3d^{3}4s^2$ C. [Kr]$4d^{10}5s^{2}5p^5$ D. [Ar]$3d^{10}4s^1$ E. [Rn]$5f^{0}6d^{2}7s^2$

Main Group Elements (s and p blocks) have their outermost electrons in $s$ or $p$ orbitals and do not have partially filled $d$ or $f$ subshells.A: Alkali metal ($s$ -block). Main group.B: Transition metal ($d$ -block).C: Halogen ($p$ -block). Main group.D: Copper ($d$ -block).E: Thorium ($f/d$ block).Correct Option: (2) A and C only