Find the Magnitude of the Vector $\mathbf { v }$ Described Below

Multiple Choice

Find the magnitude of the vector $\mathbf { v }$ described below.
Initial point: $( 1 , - 8 , - 6 )$
Terminal point: $( - 9 , - 1 , - 6 )$

A) $- 29$
B) 17
C) $\sqrt { 17 }$
D) $2 \sqrt { 149 }$
E) $\sqrt { 149 }$