Convert the given complex number in polar form: $i$

  • A
    $\cos \frac{\pi}{2} + i \sin \frac{\pi}{2}$
  • B
    $\cos \pi + i \sin \pi$
  • C
    $\cos 0 + i \sin 0$
  • D
    $\cos \frac{3\pi}{2} + i \sin \frac{3\pi}{2}$

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