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 $\langle6 , - 8 \rangle$ .

A) $\langle \frac { 4 } { 5 } , \frac { 3 } { 5 } \rangle$
B) $\left( \frac { 3 } { 5 } , \frac { 4 } { 5 } \right)$
C) $\left( \frac { 1 } { 3 } , \frac { 1 } { 4 } \right)$
D) $( 4 , - 3 )$
E) $\left( - \frac { 3 } { 5 } , - \frac { 4 } { 5 } \right)$
F) $\left( - \frac { 3 } { 5 } , \frac { 4 } { 5 } \right)$
G) $\left( \frac { 3 } { 5 } , - \frac { 4 } { 5 } \right)$
H) $\langle 6 , - 8 \rangle$