Which of the Following Represents the Correct Order of Soil $\rightarrow$

Which of the following represents the correct order of soil horizons that you would encounter if you started digging in your garden?

A) Parent rock $\rightarrow$ subsoil $\rightarrow$ topsoil
B) Topsoil $\rightarrow$ subsoil $\rightarrow$ parent rock
C) Topsoil $\rightarrow$ parent rock $\rightarrow$ subsoil
D) Parent rock $\rightarrow$ topsoil $\rightarrow$ subsoil
E) Subsoil $\rightarrow$ parent rock $\rightarrow$ topsoil