$A$ neutron star with magnetic moment of magnitude $m$ is spinning with angular velocity $\omega$ about its magnetic axis. The electromagnetic power $P$ radiated by it is given by $\mu_{0}^{x} m^{y} \omega^{z} c^{u}$,where $\mu_{0}$ and $c$ are the permeability and speed of light in free space,respectively. Then,

• A
  $x=1, y=2, z=4$ and $u=-3$
• B
  $x=1, y=2, z=4$ and $u=3$
• C
  $x=-1, y=2, z=4$ and $u=-3$
• D
  $x=-1, y=2, z=4$ and $u=3$