Read this sentence from the text:

The ground had a light dusting of white sand over an under layer of dried black mud. It looked like a recently frosted chocolate cake, though the frosting was spread a bit thin for my taste.

Which of the following best explains the phrase like a recently frosted chocolate cake?

The dark mud showed through the light white sand.
The dark mud was spongy like a warm, fresh cake.
The dark mud had a sweet quality like frosting.
The dark mud held their footsteps like frosting would.