Subtract the rational expressions and simplify.

Subtract the rational expressions and simplify.

fraction numerator x over denominator x squared plus 5 x plus 6 end fraction minus space fraction numerator 2 over denominator x squared minus 9 end fraction

A. fraction numerator x squared minus 5 x plus 4 over denominator x cubed plus 2 x squared minus 9 x minus 18 end fraction

B. fraction numerator x minus 2 over denominator 5 x minus 3 end fraction

C. fraction numerator x squared minus 5 x space minus 4 over denominator x cubed plus 2 x squared minus 9 x minus 18 end fraction

D. fraction numerator x minus 2 over denominator 5 x plus 15 end fraction