What Happens in France If No Candidate Wins a Majority

What happens in France if no candidate wins a majority in the first round of voting for president?

A) The election is declared null and the current president continues to serve.
B) A "run-off" election is held among the top three vote-getters.
C) The candidate who gets a majority in the French College d'Electors vote wins.
D) Parties nominate new candidates and the campaign begins all over again.
E) A second election is held.