$\sin ^2 76^{\circ}+\sin ^2 16^{\circ}-\sin 76^{\circ} \sin 16^{\circ} = $

  • A
    $0$
  • B
    $\frac{1}{4}$
  • C
    $\frac{3}{4}$
  • D
    $\frac{4}{3}$

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