જો $a^{1/x} = b^{1/y} = c^{1/z}$ અને $b^2 = ac$ હોય,તો $x + z = $

  • A
    $y$
  • B
    $2y$
  • C
    $2xyz$
  • D
    આમાંથી કોઈ નહીં

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