Which Statement Correctly Reflects Interest Group Tactics

Which statement correctly reflects interest group tactics?

A) Groups are advised to attempt to influence policy at the post-legislative stage.
B) Groups typically rely on media campaigns and public demonstrations more than quiet, behind-the-scenes consultations.
C) Groups within the inner circle of the policy community rely on a less discreet manner of approaching government.
D) Co-operative lobbying is a very effective and frequently used tactic.