$\bigg \{ x \in R :\large\frac{2x-1}{x^3+4x^2+3x} \in$$R \bigg \} =$

Question

$$\begin {array} {1 1} (1)\;R -\{ 0 \} & \quad (2)\;R- \{ 0,1,3\} \\ (3)\;R-\{0,-1,-3\} & \quad (4)\;IR -\{0,-1,-3,+\frac{1}{2}\} \end {array}$$