Question: Scientists claim that the continents of South America and Africa were once a single landmass. All of the following observations support this claim except

  Options: 
 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. 
Answer: C