 Note that everyone prefers candidate \(B\) over candidate \(D\). Nonetheless, a moderator can ask the right questions so that candidate \(D\) ends up being elected. The moderator proceeds as follows: First, ask the voters if they prefer candidate \(A\) or candidate \(B\). Since the voters prefer \(A\) to \(B\) by a margin of 2 to 1, the moderator  declares that candidate \(B\) is no longer in the running. The moderator then asks voters to choose between candidate \(A\) and candidate \(C\). Candidate \(C\) wins this election 2–1, so candidate \(A\) is removed. Finally, in the last round the chairman asks voters to choose between candidates \(C\) and  \(D\). Candidate \(D\) wins this election 2–1 and is declared the winner. 