If the value of gravitational acceleration at a height h above the Earth's surface is the same as that at a depth d below the Earth's surface (with both h and d small compared to the Earth's radius R), then

If the value of gravitational acceleration at a height h above the Ear

1.	If the value of gravitational acceleration at a height h above the Earth's surface is the same as that at a depth d below the Earth's surface (with both h and d small compared to the Earth's radius R), then
A.	h = d2 / R
B.	h = d / 2
C.	h = d
D.	h = 2 d
Answer» C. h = d