Function $f:(2, \infty) \rightarrow R$ defined by $f(x) = x^2 - 4x + 5$. The range of $f$ is $=$ . . . . . . .

  • A
    $R$
  • B
    $[1, \infty)$
  • C
    $(1, \infty)$
  • D
    $[5, \infty)$

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