$P(A \cup B) = P(A \cap B)$ if and only if the relation between $P(A)$ and $P(B)$ is

  • A
    $P(A) = P(\bar{A})$
  • B
    $P(A \cap B) = P(A' \cap B')$
  • C
    $P(A) = P(B)$
  • D
    None of these

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