At a certain height h above the surface of the earth the change in the value of acceleration due to gravity (g) is the same as that at a depth x below the surface. Assuming h and x to be enough small compared to the radius of the earth, $$x \colon h$$ is

A

$$1 \colon 1$$

B

$$2 \colon 1$$

C

$$1 \colon 2$$

D

$$1 \colon 4$$