Find the Magnitude of the Vector Given Below $\mathbf { v } = \langle 5 , - 2 \}$

Multiple Choice

Find the magnitude of the vector given below. Round your answer to four decimal places. $\mathbf { v } = \langle 5 , - 2 \}$

A) 0
B) $\sqrt { 21 }$ or $4.5826$
C) $\sqrt { 29 }$ or $5.3852$
D) $\sqrt { 7 }$ or $2.6458$
E) $\sqrt { 10 }$ or $3.1623$