If $\alpha$ and $\beta$ are the roots of the equation $ax^2 + bx + c = 0$,then $\frac{\alpha}{a\beta + b} + \frac{\beta}{a\alpha + b} = \dots$

  • A
    $2/a$
  • B
    $2/b$
  • C
    $2/c$
  • D
    $-2/a$

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