There are $n$ different objects $1, 2, 3,......n$ distributed at random in $n$ places marked $1, 2, 3, ......n$. The probability that at least three of the objects occupy places corresponding to their number is

  • A

    $\frac{1}{6}$

  • B

    $\frac{5}{6}$

  • C

    $\frac{1}{3}$

  • D

    None of these

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