A diffferential equation is given as $$x^2 \frac{d^2y}{dx^2} – 2x \frac{dy}{dx} +2y =4$$ The solution of the differential equation in terms of arbitrary constants $C_1$ and $C_2$ is

1. $y=C_1x^2 +C_2 x+2 \\$
2. $y=\dfrac{C_1}{x^2} +C_2x+2 \\$
3. $y=C_1x^2+C_2x+4 \\$
4. $y=\dfrac{C_1}{x^2}+C_2x+4$