Which one of the following is NOT a responsible authorship guiding principle or practice?

Each author should be willing to support the general conclusions
      of, and take intellectual respsonbility for, the work described.
An individual may be listed as an author without his/her knowledge
      and/or permission.
Honorary authorship is strongly discouraged as it misrepresents
      the work of both the "honored" individual and the co-authors.
All sources of financial support and affiliations that represent a
      potential conflict of interest should be fully disclosed