Here's a problem to solve: A student found a worm under some leaves and wrote observations about the worm in a notebook. Which is a fact that could be found in the student's notebook?

Among the 4 following options, which is the correct answer?

- A: The worm feels cold.
 
- B: The worm is a heterotroph.
 
- C: The worm has 33 segments.
 
- D: The worm has a four-chambered heart.
 