Let $z=x+iy$ and $P(x, y)$ be a point on the Argand plane. If $z$ satisfies the condition $\operatorname{Arg}\left(\frac{z-3i}{z+2i}\right)=\frac{\pi}{4}$, then the locus of $P$ is:

  • A
    $x^2+y^2-y-6=0, (x, y) \neq (0, -2)$
  • B
    $x^2+y^2-x-y-6=0, (x, y) \neq (0, -2)$
  • C
    $x^2+y^2+5x-y-6=0, (x, y) \neq (0, -2)$
  • D
    $x^2+y^2+x-y-6=0, (x, y) \neq (0, -2)$

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