Find the Magnitude of the Vector $\mathbf { v }$ $$\mathbf { v } = \langle - 7,1 , - 8 \rangle$$

Multiple Choice

Find the magnitude of the vector $\mathbf { v }$ .
$$\mathbf { v } = \langle - 7,1 , - 8 \rangle$$

A) $- 14$
B) 16
C) $\sqrt { 14 }$
D) $2 \sqrt { 114 }$
E) $\sqrt { 114 }$