Find (If Possible) the Complement Of $\frac { \pi } { 7 }$

Multiple Choice

Find (if possible) the complement of $\frac { \pi } { 7 }$ .

A) $\frac { 3 \pi } { 7 }$

B) $\frac { 2 \pi } { 7 }$

C) $\frac { 6 \pi } { 7 }$

D) $\frac { 5 \pi } { 14 }$

E) not possible