If the ${p^{th}}$,${q^{th}}$ and ${r^{th}}$ term of a $G.P.$ are $a,\;b,\;c$ respectively, then ${a^{q - r}}{b^{r - p}}{c^{p - q}}$ is equal to

  • A

    $0$

  • B

    $1$

  • C

    $abc$

  • D

    $pqr$

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