Figure shows two concentric spherical shells of masses M₁ and M₂ and of radii R₁ and R₂, respectively. gravitational intensity at a distance x from the centre such that x > R₂ is :

• A

  $\mathrm{G}\left(\frac{{\mathrm{M}}_1+{\mathrm{M}}_2}{{\mathrm{x}}^2}\right)$

• B

  $\mathrm{G}\left(\frac{{\mathrm{M}}_1}{{\mathrm{R}}_1^2}+\frac{{\mathrm{M}}_2}{{\mathrm{R}}_2^2}\right)$

• C

  $\mathrm{G}\left(\frac{{\mathrm{M}}_1}{{\mathrm{R}}_1^2}+\frac{{\mathrm{M}}_2}{{\mathrm{x}}^2}\right)$

• D

  $\mathrm{G}\left(\frac{{\mathrm{M}}_1}{{\mathrm{x}}^2}+\frac{{\mathrm{M}}_2}{{\mathrm{R}}_2^2}\right)$