Consider the following statements:
(a) The acceleration due to gravity decreases with increasing altitude.
(b) The acceleration due to gravity increases with increasing depth (assuming the Earth is of uniform density).
(c) The acceleration due to gravity increases with increasing latitude.
(d) The acceleration due to gravity is independent of the Earth's mass.


Choose the correct option from the given ones:

1. (b), (d) 2. (a), (c)
3. (c), (d) 4. (a), (c), (d)