If one of the roots of the equation $6 x^3-25 x^2+2 x+8=0$ is an integer and $\alpha>0$, $\beta < 0$ are the other two roots, then $\frac{4}{\alpha}+\frac{1}{\beta}=$

• A

  $0$
• B

  $1$
• C

  $-2$
• Correct answer
  D

  $4$

Hence, the correct answer is option: 'D'.