Find the Indicated Integral $\int ( 20 \cos x - 6 \sin x ) d x$

Multiple Choice

Find the indicated integral: $\int ( 20 \cos x - 6 \sin x ) d x$

A) $20 \sin x - 6 \cos x + C$
B) $- 20 \sin x + 6 \cos x + C$
C) $20 \sin x + 6 \cos x + C$
D) $- 20 \sin x - 6 \cos x + C$