Find the Complement of the Number $\frac { 5 } { 7 }$

Multiple Choice

Find the complement of the number $\frac { 5 } { 7 }$ .

A) $\frac { 7 } { 5 }$
B) $7$
C) $1 \frac { 2 } { 7 }$
D) $0.71$
E) $\frac { 2 } { 7 }$