The value of $x$ satisfying $\log_a x + \log_{\sqrt{a}} x + \log_{\sqrt[3]{a}} x + \dots + \log_{\sqrt[a]{a}} x = \frac{a(a+1)}{2}$ is:

  • A
    $x = a$
  • B
    $x = a^a$
  • C
    $x = a^{-1/a}$
  • D
    $x = a^{1/a}$

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