If the sum of the roots of the equation $x^2-x=\lambda(2x-1)$ is zero then $\lambda$=_______

Question

$\begin{array}{1 1}(A) \; -2\\(B)\;2 \\(C)\;\large\frac{-1}{2} \\(D)\;\large\frac{1}{2} \end{array}$