In $\Delta ABC$,$m \angle A = 90^{\circ}$ and $m \angle B = 30^{\circ}$. Then,which of the following holds true?

  • A
    $AC = \frac{1}{2} AB$
  • B
    $AC = \frac{1}{2} BC$
  • C
    $AB = \frac{1}{2} BC$
  • D
    $AB = \frac{1}{2} AC$

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