Which Best Explains Why the Committee of Public Safety Systematically

Which best explains why the Committee of Public Safety systematically eliminated any opposition?

A) They were extremists who believed they knew what was best for France.
B) They knew what path France had to follow to fully realize the Revolution.
C) They were forced to defend themselves against constant Girondist rebellions.
D) They were conservatives who thought it necessary to curb radical change.
E) They were royalists who wanted revenge for the king's harsh end.