For the three events $A, B$ and $C, P$ (exactly one of the events $A$ or $B$ occurs) = $P$ (exactly one of the events $B$ or $C$ occurs)= $P$ (exactly one of the events $C$ or $A$ occurs)= $p$ and $P$ (all the three events occur simultaneously) $ = {p^2},$ where $0 < p < 1/2$. Then the probability of at least one of the three events $A, B$ and $C$ occurring is

  • [IIT 1996]
  • A

    $\frac{{3p + 2{p^2}}}{2}$

  • B

    $\frac{{p + 3{p^2}}}{4}$

  • C

    $\frac{{p + 3{p^2}}}{2}$

  • D

    $\frac{{3p + 2{p^2}}}{4}$

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