Which of the following describes the electronic configuration of the electronic ground state of the $F_2$ molecule?
$
\begin{aligned}
& 1 \sigma_g^2 1 \sigma_u^2 2 \sigma_g^2 1 \pi_q^4 1 \pi_g^4 \\
& 1 \sigma_g^2 1 \sigma_u^2 1 \pi_u^4 2 \sigma_g^2 2 \sigma_u^2 1 \pi_g^4 \\
& 1 \sigma_g^2 1 \sigma_u^2 1 \pi_u^4 2 \sigma_g^2 1 \pi_g^4 \\
& 1 \sigma_g^2 1 \sigma_u^2 1 \pi_u^4 2 \sigma_g^2 1 \pi_g^4 \\
& 2 \sigma_u^2
\end{aligned}
$