Find the Component Form of V If $\| \mathbf { v } \| = 10$

Find the component form of v if $\| \mathbf { v } \| = 10$ and the angle it makes with the x-axis is 120°.

A) ? $\langle - 5 \sqrt { 3 } , 5 \rangle$
B) ? $\langle - 5 \sqrt { 3 } , - 10 \rangle$
C) ? $\langle - 5 \sqrt { 2 } , 5 \sqrt { 2 } \rangle$
D) ? $\langle - 5,5 \sqrt { 3 } \rangle$
E) ? $\langle - 10,10 \sqrt { 3 } \rangle$