ただしいツインテールってどれ?

http://i.imgur.com/50hCLaf.jpg
http://i.imgur.com/8iaFLU7.jpg
http://i.imgur.com/oRRkyN4.jpg
http://i.imgur.com/2FAywSi.jpg
http://i.imgur.com/ug2VxK2.jpg
http://i.imgur.com/Dg6sT5a.jpg
http://i.imgur.com/hL4rnJ3.jpg
http://i.imgur.com/jNBXwlN.jpg