$A$ spherically symmetric charge distribution is characterized by a charge density $\rho(r) = \rho_0 \left( \frac{5}{4} - \frac{r}{R} \right)$ for $r \le R$ and $\rho(r) = 0$ for $r > R$,where $r$ is the distance from the origin. The electric field at a distance $r$ from the origin $(r < R)$ is given by:

• A
  $\frac{\rho_0 r}{3\varepsilon_0} \left( \frac{5}{4} - \frac{r}{R} \right)$
• B
  $\frac{\rho_0 r}{3\varepsilon_0} \left( \frac{5}{4} - \frac{3r}{4R} \right)$
• C
  $\frac{\rho_0 r}{4\varepsilon_0} \left( \frac{5}{3} - \frac{r}{R} \right)$
• D
  $\frac{4\rho_0 r}{3\varepsilon_0} \left( \frac{5}{4} - \frac{r}{R} \right)$