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 $\langle 1,1,1 \rangle$ .

A) $\langle 1,1,1 \rangle$
B) $( - 1 , - 1 , - 1 )$
C) $\left( \sqrt { \frac { 1 } { 3 } } , \sqrt { \frac { 1 } { 3 } } , \sqrt { \frac { 1 } { 3 } } \right)$
D) $\left( \sqrt { \frac { 1 } { 2 } } , \sqrt { \frac { 1 } { 2 } } , \sqrt { \frac { 1 } { 2 } } \right)$
E) $\left\langle \frac { 1 } { 3 } , \frac { 1 } { 3 } , \frac { 1 } { 3 } \right\rangle$
F) $\left\langle \frac { 1 } { 2 } , \frac { 1 } { 2 } , \frac { 1 } { 2 } \right\rangle$
G) $\left\langle \frac { 1 } { 4 } , \frac { 1 } { 4 } , \frac { 1 } { 4 } \right\rangle$
H) $\langle 1 , - 1,1 \rangle$