Find the Magnitude of V $( 1 , - 5,6 )$

Multiple Choice

Find the magnitude of v.
Initial point: $( 1 , - 5,6 )$ Terminal point: $( 1,0 , - 1 )$

A) $\| \mathbf { v } \| =$ $7$
B) $\| \mathbf { v } \| =$ $\sqrt { 26 }$
C) $\| \mathbf { v } \| =$ $\sqrt { 74 }$
D) $\| \mathbf { v } \| =$ $5 \sqrt { 2 }$
E) $\| \mathbf { v } \| =$ $5$