In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Q: Context: Beyrichites is an extinct genus in the ammonoid cephalopod order Ceratitida from the Lower and Middle Triassic of southern Europe Asia and western North America. Beyrichites has an involute discoidal shell with a narrowly arched venter and signoidal ribbing that tends to disappear on the outer whorl. The suture is subammonitic meaning the saddles are serrate as well as the lobs.Two subgenera are recognized: B. (Beyrichites) from the Lower and Middle Triassic which has no tubercles and B.
Question: The document can be classified to which topic?
Options: 1)NaturalPlace, 2)Athlete, 3)OfficeHolder, 4)Animal, 5)WrittenWork
A:
4