The equation of the circle whose diameters have the end points $(a, 0)$ and $(0, b)$ is given by:

  • A
    $x^2 + y^2 - ax - by = 0$
  • B
    $x^2 + y^2 + ax - by = 0$
  • C
    $x^2 + y^2 - ax + by = 0$
  • D
    $x^2 + y^2 + ax + by = 0$

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