Express the Indicated Roots of Unity in Standard Form a $1+0 \mathrm{i}$

Multiple Choice

Express the indicated roots of unity in standard form a + bi.
-Ninth roots of unity

A) $1+0 \mathrm{i}$
$$\begin{array}{l}\cos \frac{2 \pi}{9}+i \sin \frac{2 \pi}{9} \approx 0.77+0.64 i \\\cos \frac{4 \pi}{9}+i \sin \frac{4 \pi}{9} \approx 0.17+0.98 i \\\cos \frac{2 \pi}{3}+i \sin \frac{2 \pi}{3}=-0.50+i \frac{\sqrt{3}}{2} \\\cos \frac{8 \pi}{9}+i \sin \frac{8 \pi}{9} \approx-0.94+0.34 i \\\cos \frac{10 \pi}{9}+i \sin \frac{10 \pi}{9} \approx-0.94-0.34 i \\\cos \frac{4 \pi}{3}+i \sin \frac{4 \pi}{3}=-0.50-i \frac{\sqrt{3}}{2} \\\cos \frac{14 \pi}{9}+i \sin \frac{14 \pi}{9} \approx 0.17-0.98 \mathrm{i} \\1-i\end{array}$$
B) $1+0 \mathrm{i}$
$$\begin{array}{l}\cos \frac{\pi}{9}+i \sin \frac{\pi}{9} \approx 0.94+0.34 i \\\cos \frac{2 \pi}{9}+i \sin \frac{2 \pi}{9} \approx 0.77+0.64 i \\\cos \frac{\pi}{3}+i \sin \frac{\pi}{3}=0.50+i \frac{\sqrt{3}}{2} \\\cos \frac{4 \pi}{9}+i \sin \frac{4 \pi}{9} \approx 0.17+0.98 i \\\cos \frac{5 \pi}{9}+i \sin \frac{5 \pi}{9} \approx-0.17+0.98 i \\\cos \frac{2 \pi}{3}+i \sin \frac{2 \pi}{3}=-0.50+i \frac{\sqrt{3}}{2} \\\cos \frac{7 \pi}{9}+i \sin \frac{7 \pi}{9} \approx-0.77+0.64 i \\\cos \frac{8 \pi}{9}+i \sin \frac{8 \pi}{9} \approx-0.94+0.34 i\end{array}$$
C) $1+0 i$
$\cos \frac{2 \pi}{9}+i \sin \frac{2 \pi}{9} \approx 0.77+0.64 i$
$\cos \frac{4 \pi}{9}+i \sin \frac{4 \pi}{9} \approx 0.17+0.98 i$
$\cos \frac{2 \pi}{3}+i \sin \frac{2 \pi}{3}=-0.50+i \frac{\sqrt{3}}{2}$
$\cos \frac{8 \pi}{9}+i \sin \frac{8 \pi}{9} \approx-0.94+0.34 i$
$\cos \frac{10 \pi}{9}+i \sin \frac{10 \pi}{9} \approx-0.94-0.34 i$
$\cos \frac{4 \pi}{3}+i \sin \frac{4 \pi}{3}=-0.50-i \frac{\sqrt{3}}{2}$
$\cos \frac{14 \pi}{9}+i \sin \frac{14 \pi}{9} \approx 0.17-0.98 i$
$\cos \frac{16 \pi}{9}+i \sin \frac{16 \pi}{9} \approx 0.77-0.64 i$

D) $1+0 i$
$\cos \frac{2 \pi}{9}+i \sin \frac{2 \pi}{9} \approx 0.77+0.64 i$
$\cos \frac{4 \pi}{9}+i \sin \frac{4 \pi}{9} \approx 0.17+0.98 i$
$\cos \frac{2 \pi}{3}+i \sin \frac{2 \pi}{3}=-0.50+i \frac{\sqrt{3}}{2}$
$-1+0 i$
$\cos \frac{10 \pi}{9}+i \sin \frac{10 \pi}{9} \approx-0.94-0.34 i$
$\cos \frac{4 \pi}{3}+i \sin \frac{4 \pi}{3}=-0.50-i \frac{\sqrt{3}}{2}$
$\cos \frac{14 \pi}{9}+i \sin \frac{14 \pi}{9} \approx 0.17-0.98 i$
$\cos \frac{16 \pi}{9}+i \sin \frac{16 \pi}{9} \approx 0.77-0.64 i$