If \(\int {\frac{{9x + 15}}{{{x^3} - 6x - 9}}} \,dx = A\log \left| {g\left( x \right)} \right| + B\log \left| {f(x)} \right| + C\), then \(\frac{{\left( {A - B} \right)g\left( 4 \right)}}{{f\left( { - 1} \right)}} = \)
1
3
2
\(\frac{1}{7}\)
3
1
4
\(\frac{3}{7}\)