In acid rain, why do statues with small details dissolve faster than statues with smooth surfaces

We are learning about Chemical Equations, and I have no clue on how this relates.
Please help with an answer.
Thanks!

Statues with fine details would dissolve faster because they have little grooves and indentations on the surface that would allow the acid rain to get trapped, thus giving the acidic compounds in the acid rain to have more time to do their damage.

On a smooth statue, the rain would run off the surface and dry up quickly, so the statue would not be effected as much.

Statues containing Carbonates (like marble), are quickly attacked by acids and, Carbonates have some porosity which will adsorb the acid rain and hold it in its pores.
The acid erosion will therefore be quite high and quickly disfigure the statue.