If the equation $px^2 + (2 - q)xy + 3y^2 - 6qx + 30y + 6q = 0$ represents a circle,then the values of $p$ and $q$ are:

  • A
    $3, 1$
  • B
    $2, 2$
  • C
    $3, 2$
  • D
    $3, 4$

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