If the roots of the equation $ax^2 + bx + c = 0$ are $\sin \alpha$ and $\cos \alpha$,then:

  • A
    $a^2 + b^2 - 2ac = 0$
  • B
    $a^2 - b^2 + 2ac = 0$
  • C
    $(a + c)^2 = b^2 + c^2$
  • D
    Both $(b)$ and $(c)$

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