Add the rational expressions and simplify.

$fraction numerator x plus 3 over denominator 5 x squared plus 12 x plus 4 end fraction plus fraction numerator 6 over denominator x squared minus x minus 6 end fraction$

A. $fraction numerator x squared plus 30 x plus 3 over denominator 5 x cubed minus 3 x squared minus 32 x space minus 12 end fraction$

B. $fraction numerator x plus 9 over denominator 7 x squared plus 11 x minus 2 end fraction$

C. $fraction numerator x squared plus 36 x plus 21 over denominator 5 x cubed minus 3 x squared minus 32 x minus 12 end fraction$

D. $fraction numerator x squared plus 36 x plus 21 over denominator 5 x cubed plus 27 x squared plus 40 x plus 12 end fraction$

Add the rational expressions and simplify.

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