If $\alpha, \beta, \gamma$ are the roots of the equation $x^3+4x^2-9x-36=0$ and $\alpha < \beta < \gamma$,then find the value of $\alpha+2\beta+3\gamma$.

  • A
    $1$
  • B
    $0$
  • C
    $-1$
  • D
    $-2$

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