After entering the command ls -al, the following result is obtained:
drwxr-xr-x 6 smart users 4096 2007-11-28 12:19 PM.
drwxr-xr-x 11 root root 4096 2007-09-29 04:59 ..
-rw-r ---- x 1 smart users 130 2007-08-23 16:37 article.sql
Explain the line citing article.sql (check out all correct answers, there are several of them).