What Is the Difference Between an Executive Agreement and a Treaty

What is the difference between an executive agreement and a treaty?

A) Executive agreements require the consent of the Senate, treaties do not.
B) The Senate plays a key party in negotiating executive agreements; presidents tend to negotiate treaties alone.
C) Unlike treaties, the Supreme Court has declared executive agreements unconstitutional.
D) Executive agreements are mentioned in the Constitution; treaties are not.
E) Treaties require the advice and consent of the Senate; executive agreements do not.