Subtract the rational expressions and simplify.

Subtract the rational expressions and simplify.

Subtract the rational expressions and simplify.

fraction numerator x plus 4 over denominator 4 x end fraction minus space fraction numerator x minus 4 over denominator 4 x end fraction

A. 0

B. fraction numerator 8 over denominator 4 x end fraction

C. 2 over x

D. 1 over x