Which of the Following Negates the Charge of Criminal Attempt

Which of the following negates the charge of criminal attempt?

A) Impossibility that the crime could be carried out, such trying to kill a person who in fact is already dead
B) An plan that where success is improbable
C) A plan to commit the offense where the offender fails to carry out the entire plan, such as leaving the bullets out of a gun during robbery
D) A crime stopped in progress by the police