Interest Groups Often Hire Former Government Employees or Former Members

Interest groups often hire former government employees or former members of Congress as lobbyists for all of the following reasons except that these

A) lobbyists "know their way around Washington."
B) individuals often retain friendships with former colleagues.
C) groups cannot possibly be effective if they do not hire these people.
D) lobbyists often have expert knowledge.
E) lobbyists often understand the regulatory process.