MCQ about shell pathes

A path describes the location of an object in a file system. What is an “absolute path” to the file “chapter1.html”?

1. The shortest specification how to reach the desired object from the current working directory,
   f.ex. ”../../documents/book/chapter1.html”.
2. The specification how to reach the desired object from the current working directory on an arbitrary path,
   f.ex. ”../../../bill/documents/book/chapter1.html”.
3. The specification how to reach the desired object from the root of the filesystem,
   f.ex. “/home/bill/documents/book/chapter1.html”.
4. The specification how to reach the folder that contains the desired element,
   f.ex. “/home/bill/documents/book/”.

Three of the four given pathes point to the same file. Which path points to another file?

1. ~/documents/book/chapter1.html
2. ~/documents/paper/section1/../../book/chapter1.html
3. ~/documents/paper/section1/../.././book/chapter1.html
4. ~/documents/paper/section1/../../.book/chapter1.html