$\sin 75^\circ = $

  • A
    $\frac{2 - \sqrt{3}}{2}$
  • B
    $\frac{\sqrt{3} + 1}{2\sqrt{2}}$
  • C
    $\frac{\sqrt{3} - 1}{-2\sqrt{2}}$
  • D
    $\frac{\sqrt{3} - 1}{2\sqrt{2}}$

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