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: The Fairchild FB-3 (Flying Boat number 3) was an all-metal flying boat developed by the new Fairchild Metal Boat Division of the Fairchild Aircraft Corporation. The aircraft did not go into production.
Question: The document can be classified to which topic?
Options: 1)OfficeHolder, 2)Artist, 3)Building, 4)WrittenWork, 5)MeanOfTransportation
A:
5