Which one of the following is NOT a responsible publication practice?

Authors should publish all pertinent available information data
      in a single manuscript.
Authors should strive to submit manuscripts that make a new
      contribution to the field of study rather than substantially repeat
      previously published results.
Authors should sign contractual agreements that restrict
      dissemination of findings.
Authors should only submit a manuscript for review to one
      publisher at a time, unless the publishers are aware of and
      agree to the simultaneous submission.
All of the above are responsible publication practices.