Let a function $f: (0, \infty) \to (0, \infty)$ be defined by $f(x) = |1 - \frac{1}{x}|$. Then $f$ is

  • A
    not injective but it is surjective
  • B
    injective only
  • C
    neither injective nor surjective
  • D
    both injective as well as surjective

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