If acceleration due to gravity at distance $d < R$ from the centre of the Earth is $\beta$,then its value at distance $d$ above the surface of the Earth will be [where $R$ is the radius of the Earth].
- A$\frac{\beta R^2}{(R+d)^3}$
- B$\frac{\beta R}{2 d}$
- C$\frac{\beta d}{(R+d)^2}$
- D$\frac{\beta R^3}{d(R+d)^2}$
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