Here's a problem to solve: Scientists claim that the continents of South America and Africa were once a single landmass. All of the following observations support this claim except

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

- A: the mountains on these continents have similar rocks of the same age.
 
- B: these continents appear to fit together like the pieces of a puzzle.
 
- C: similar fish live in the ocean off the coasts of these continents.
 
- D: the same kinds of fossils have been found on these continents.
 