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

A)

Multiple Choice

Find the magnitude of vector $\mathbf { v }$ .

A) $\| \mathrm { v } \| = 4 \sqrt { 2 }$
B) $\| v \| = 2 \sqrt { 7 }$
C) $\| v \| = 6$
D) $\| \mathrm { v } \| = 6 \sqrt { 3 }$
E) $\| v \| = 5$