Choose the correct alternative

Options

A. Acceleration due to gravity increase/decreases with increasing altitude.
B. Acceleratino due to gravity increases/decreases with increasing depth (assume the earth to be a sphere of uniform density).
C. Acceleration due to gravity is independent of the mass of the Earth/mass of the body.
D. The formula - GM m`(1//r_2 - 1//r_1)` is more/less accurate than the formula mg `(r_2 - r_1)` for the difference of potential energy between two points `r_1` and `r_2` distance away from the centre of the Earth.