Find an Antiderivative of the Given Function $\cos \pi x + 6 \sin \frac { x } { 6 }$

Multiple Choice

Find an antiderivative of the given function.
- $\cos \pi x + 6 \sin \frac { x } { 6 }$

A) $\frac { 1 } { \pi } \sin \pi x - \cos \frac { x } { 6 }$
B) $- \pi \sin \pi x + \cos \frac { x } { 6 }$
C) $- \sin \pi x - 36 \cos \frac { x } { 6 }$
D) $\frac { 1 } { \pi } \sin \pi x - 36 \cos \frac { x } { 6 }$