State the Period of the Function:​ $$y = \sec 8 x$$

Multiple Choice

State the period of the function:​ $$y = \sec 8 x$$ ​

A) $\frac { \pi } { 8 }$
B) $\frac { \pi } { 4 }$ ​
C) $\frac { \pi } { 6 }$ ​
D) $\frac { \pi } { 5 }$ ​
E) $\frac { \pi } { 7 }$ ​