If $\alpha, \beta, \gamma$ are the roots of $x^3+a x^2+b x+c=0$ then $\sum \frac{1}{\alpha}=\ldots$, if $\alpha, \beta, \gamma$ are non-zero

• A

  $\frac{-b}{a}$
• Correct answer
  B

  $$ \frac{-b}{c} $$
• C

  $\frac{-b}{c}$
• D

  $\frac{b}{a}$

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