Which is the BEST explanation of the figurative meaning of the underlined phrase in the sentence below? She envisioned the lake that lapped the foundation of Gramp's house and the feet of Gramp's worn dock.
A
The phrase depicts the dock as a human being with worn feet.

B
The phrase indicates the lower end or bottom of the dock.

C
The phrase refers to people's habit of dangling their feet over the dockside.

D
The phrase shows that the dock is dangerously worn and may collapse.