Here's a problem to solve: Two organisms mate and produce offspring. Which of the following statements best explains why the offspring are unable to reproduce?

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

- A: The parents are of a different genus and a different species.
 
- B: The parents are of a different species, but of the same genus.
 
- C: The parents are of the same genus and of the same species.
 
- D: The parents are of the same species, but of a different genus.
 