Convert the polar representation of this complex number into its standard form.2(cos(7pi/6)+isin(7pi/6))A.) -sqrt(3)-iB.) 1-sqrt(3) iC.) -sqrt(3)/2-1/2iD.) sqrt(3)-1*Need help please*

[tex]2(cos(\frac{7 \pi}{6})+i\ sin(\frac{7 \pi}{6}))\\\\2((-\frac{\sqrt{3}}{2})+i(-\frac{1}{2}))\\\\\\-\sqrt{3}-i[/tex]