$(x^2+y^2) dy = xy dx$. If $y(x_0) = e$ and $y(1) = 1$,then the value of $x_0$ is equal to

  • A
    $\sqrt{e^2 - \frac{1}{2}}$
  • B
    $\sqrt{3} e$
  • C
    $\sqrt{e^2 + \frac{1}{2}}$
  • D
    $\sqrt{\frac{e^2 - 1}{2}}$

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