Figure shown \( A B C D E F \) as a regular hexagion. What is the v...

Figure shown \( A B C D E F \) as a regular hexagion. What is the value of
\[
\mathbf{A B}+A \mathbf{A}+\mathbf{A D}+\mathbf{A E}+\mathbf{A F} ?
\]
(b) \( 2 \mathrm{AO} \)
(c) \( 4 \mathrm{AO} \)
(d) \( 6 \mathrm{AD} \)