If $C$ is the reflection of $A(2, 4)$ in the $x$-axis and $B$ is the reflection of $C$ in the $y$-axis, then $|AB|$ is

  • A
    $20$
  • B
    $2 \sqrt{5}$
  • C
    $4 \sqrt{5}$
  • D
    $4$

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