A company published an ebook about the effects of off-site team building. What social media marketing action should they take to help generate leads for the offer?

A company published an ebook about the effects of off-site team building. What social media marketing action should they take to help generate leads for the offer?
  A)  Create tweets that include a link to landing page for the ebook
  B)  Include a link to the ebook in their Twitter profile
  C)  Create a Facebook group for customers and promote the ebook to the group members
  D)  Publish the ebook to LinkedIn