Algebra 2 Polynomials Simplify The Expression Exercise Help

Simplify the expression

$fraction numerator x cubed minus 3 x squared plus x minus 3 over denominator x to the power of 2 space end exponent plus 1 end fraction$

A. $x squared minus 4 x plus 5 space minus space fraction numerator 8 over denominator x squared plus 1 end fraction$

B. x-3

C. $x squared minus 4 space plus space fraction numerator x plus 1 over denominator x squared plus 1 end fraction$

D. $x minus 4 space plus space fraction numerator 5 x minus 3 over denominator x squared plus 1 end fraction$