Here's a problem to solve: A student examined diagrams of two different cells. One cell was prokaryotic, and the other cell was eukaryotic. What should the student do to identify a major difference between the diagrams?

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

- A: compare the shapes of the two cells
 
- B: check to see which diagram shows a nucleus
 
- C: check to see which diagram shows cytoplasm
 
- D: compare the number of vacuoles in the two cells
 