If $R$ is the set of all real numbers and $f: R-\{2\} \rightarrow R$ is defined by $f(x)=\frac{2+x}{2-x}$ for $x \in R-\{2\}$,find the range of $f(x)$.

  • A
    $R-\{-2\}$
  • B
    $R$
  • C
    $R-\{1\}$
  • D
    $R-\{-1\}$

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