Match Each Conspiracy Defense with Its Explanation

Match each conspiracy defense with its explanation.
-Impossibility

A) They have not committed a crime, even though they think they have.
B) A conspiracy cannot occur when two persons are required for the commission of a crime.
C) The Modern Penal Code calls this defense renunciation.
D) Requires that the defendant either advise his co-conspirators that he is no longer involved in it or inform police about the conspiracy.