Find the Integral $\int \frac{3}{3 x+1} d x$ A) $3 \ln |3 x+1|+C$

Multiple Choice

Find the integral.
- $\int \frac{3}{3 x+1} d x$

A) $3 \ln |3 x+1|+C$
B) $\ln (3 x+1) +C$
C) $\ln |3 x+1|+C$
D) $\frac{1}{3} \ln |3 x+1|+C$