$A$ thin spherical shell encloses a concentric solid sphere. The radius of the shell is $(0.060)^{1/2} \ m$ and its surface charge density is $-10^{-5} \ C/m^2$. The radius of the solid sphere is $(0.01)^{1/3} \ m$ and its volumetric charge density is $3 \times 10^{-5} \ C/m^3$. $\varepsilon_0$ is the permittivity of free space in $C^2/Nm^2$. The electric flux through a spherical surface concentric with the spherical shell and of radius greater than that of the shell in $V-m$ is:

  • A
    $\frac{0.4 \pi \times 10^{-3}}{\varepsilon_0}$
  • B
    $\frac{0.8 \pi \times 10^{-3}}{\varepsilon_0}$
  • C
    $\frac{1.2 \pi \times 10^{-3}}{\varepsilon_0}$
  • D
    $\frac{1.6 \pi \times 10^{-3}}{\varepsilon_0}$

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