If $\alpha, \beta$ are the roots of the equation $x^2+3x+k=0$ and $\alpha+\frac{1}{\alpha}, \beta+\frac{1}{\beta}$ are the roots of the equation $4x^2+px+18=0$,then $k$ satisfies the equation:

  • A
    $2x^2-13x+20=0$
  • B
    $x^2-5x+6=0$
  • C
    $2x^2-7x+3=0$
  • D
    $x^2-8x+15=0$

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