Find the Exact Value Of $\sec \left( \arctan \frac { 8 } { 15 } \right)$

Multiple Choice

Find the exact value of $\sec \left( \arctan \frac { 8 } { 15 } \right)$ .

A) $\frac { 8 } { 15 }$

B) $\frac { 32 } { 15 }$

C) $\frac { 17 } { 15 }$

D) $\frac { 17 } { 32 }$

E) $\frac { 15 } { 8 }$