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 BMW New Six CS (internal name BMW E9) was a two-door coupé built for BMW by Karmann from 1968 to 1975. It was developed from the New Class-based BMW 2000CS coupé which was enlarged to hold the BMW M30 straight-6 engine used in the E3 sedan.The E9 platform especially the 3.0CSL homologation special was very successful in racing especially in European Touring Car Championship and the Deutsche Rennsport Meisterschaft. This helped to establish BMW's status as a sporty driver's car.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)MeanOfTransportation, 3)Athlete, 4)Film, 5)OfficeHolder
2

Context: The FS E.645 and E.646 are two classes of similar electric locomotives used on Italian railways. They were introduced during the 1950s and they have been retired in 2009.
Question: The document can be classified to which topic? 
Options: 1)WrittenWork, 2)Athlete, 3)Plant, 4)MeanOfTransportation
4

Context: Nena is the first album by German pop-rock band Nena and the second studio album of its singer Gabriele Nena Kerner. Released in 1983 it was part of the music genre called Neue Deutsche Welle (meaning New German Wave) movement in the German music.The album was a great success in West Germany and the second single 99 Luftballons successfully reached No.
Question: The document can be classified to which topic? 
Options: 1)Artist, 2)Animal, 3)NaturalPlace, 4)Athlete, 5)Album

5