$A$ massive black hole of mass $m$ and radius $R$ is spinning with angular velocity $\omega$. The power $P$ radiated by it as gravitational waves is given by $P=G c^{-5} m^{x} R^{y} \omega^{z}$,where $c$ and $G$ are the speed of light in free space and the universal gravitational constant,respectively. Then,

  • A
    $x=-1, y=2, z=4$
  • B
    $x=1, y=1, z=4$
  • C
    $x=-1, y=4, z=4$
  • D
    $x=2, y=4, z=6$

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