The magnitude of electric filed as a function of the distance r inside the sphere is given by

Question

$(a)\;\large\frac{\rho_{0}}{\in_{0}}\;[\large\frac{r}{3}-\large\frac{r^2}{4R}]\qquad(b)\;\large\frac{\rho_{0}}{\in_{0}}\;[\large\frac{r}{4}-\large\frac{r^2}{3R}]\qquad(c)\;\large\frac{\rho_{0}}{\in_{0}}\;[\large\frac{r}{3}+\large\frac{r^2}{4R}]\qquad(d)\;\large\frac{\rho_{0}}{\in_{0}}\;[\large\frac{r}{4}+\large\frac{r^2}{3R}]$