The value for $\large\frac{1}{\alpha}+\frac{1}{\beta}$ when $\alpha$ and $\beta$ are the roots of the equation $25x^2-20x+2=0$ is

Question

$\begin{array}{1 1} (a)\;15 \\ (b)\;-15\\ (c)\;20 \\(d)\;-20 \end{array}$