Given the task definition and input, reply with output. 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.

Context: The Citabria is a light single-engine two-seat fixed conventional gear airplane which entered production in the United States in 1964. Designed for flight training utility and personal use it is capable of sustaining aerobatic stresses from +5g to -2g. Its name spelled backwards airbatic reflects this.
Question: The document can be classified to which topic?
Options: 1)Village, 2)Animal, 3)Athlete, 4)MeanOfTransportation
4