For what value of $k$ does the equation $kx^2+(k+3)x=1$ has two real roots.

Question

$\begin{array}{1 1} (a)\;k \leq 9,k \geq 1 \\ (b)\;k \leq -9,k \geq 1 \\ (c)\;k \leq -9,k \geq -1 \\ (d)\;k \leq 9,k \geq -1 \end{array}$