Find a Unit Vector That Has the Same Direction as the Vector

Multiple Choice

Find a unit vector that has the same direction as the vector $\langle 2,2,1 \rangle$ .

A) $\langle 1,1,1 \rangle$
B) $\langle 1,0,0 \rangle$
C) $\langle 0,1,0 \rangle$
D) $\langle 0,0,1 \rangle$
E) $\langle 1,1,0 \rangle$
F) $\left\langle \frac { 2 } { 3 } , \frac { 2 } { 3 } , \frac { 1 } { 3 } \right\rangle$
G) $\left\langle \frac { 1 } { 2 } , \frac { 1 } { 2 } , 1 \right\rangle$
H) $\left\langle \frac { 1 } { 3 } , \frac { 1 } { 3 } , 1 \right\rangle$