What Are the Consequences of Duverger's Law for Political Candidates

What are the consequences of Duverger's Law for political candidates?

A) They must join one of the existing parties.
B) Office seekers usually join one of the two competitive parties rather than pursuing office as independents or third-party nominees.
C) It forces candidates to strategically align their positions on the issues with the party so they can take full advantage of the party label.
D) Joining one of the major parties guarantees that a candidate will have sufficient financial resources to run a competitive campaign.