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

Find a unit vector that has the same direction as the vector from the point P $( 1 , - 1,1 )$ to the point Q $( 3,2 , - 5 )$ .

A) $\left( - \frac { 1 } { 2 } , \frac { 1 } { 3 } , - \frac { 1 } { 6 } \right)$
B) $\left\langle \frac { 1 } { 2 } , \frac { 1 } { 3 } , \frac { 1 } { 6 } \right\rangle$
C) $\left\langle \frac { 7 } { 2 } , \frac { 7 } { 3 } , \frac { 7 } { 6 } \right\rangle$
D) $\left\langle \frac { 2 } { 7 } , \frac { 3 } { 7 } , \frac { 6 } { 7 } \right\rangle$
E) $\left\langle \frac { 1 } { 3 } , \frac { 1 } { 4 } , \frac { 1 } { 5 } \right\rangle$
F) $\left( \frac { 2 } { 7 } , \frac { 3 } { 7 } , - \frac { 6 } { 7 } \right)$
G) $\left( \frac { 2 } { 3 } , - \frac { 3 } { 4 } , \frac { 5 } { 6 } \right)$
H) $\left( \frac { 2 } { 3 } , \frac { 3 } { 4 } , - \frac { 5 } { 6 } \right)$

Correct Answer:

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