When Presenting a Poster, It Is Generally a Good Idea

When presenting a poster, it is generally a good idea to prepare which of the following?

A) A short and brief description as that is all your audience will have time for.
B) A relatively long presentation since the audience will likely all have time to stand and read your poster in detail.
C) Three formats: a short version, a medium version, and a longer version of your presentation.
D) All the possible questions that your audience might ask, since that is all you can prepare for.