The magnitudes of gravitational field at distances `r_1`, and `r_2` from the centre of a uniform sphere of radius R and mass M are `F_1` and `F_2` respectively. Then,

Options

A. `F_1//F_2 = r_1//r_2` if `r_1 lt R` and `r_2 lt R`
B. `F_1//F_2 = r_2^2//r_1^2` if `r_1 gt R` and `r_2 gt R`
C. `F_1//F_2 = r_1//r_2` if `r_1 gt R` and `r_2 gt R`
D. `F_1//F_2 = r_1^2//r_2^2` if `r_1 lt R` and `r_2 lt R`