What general led the French troops that accompanied George Washington and the American soldiers on their 1781 march from White Plains, New York to Yorktown?

What general led the French troops that accompanied George Washington and the American soldiers on their 1781 march from White Plains, New York to Yorktown?

Comte de Grasse
Comte de Rochambeau
Maurice, Count de Saxe
Comte de Lally
Barthélemy Catherine Joubert

The Answer: The correct answer is Comte de Rochambeau.