Abandonment is a valid defense when: _____
a. The defendant postpones the project until a better time arises to carry out the crime.
b. The defendant abandons the criminal plan because he or she was unable to carry out the attempt due to some logistical or technical reason.
c. The defendant abandons the criminal plan because law enforcement intervened.
d. The defendant has had a change of heart on his or her own because of a sincere belief that furtherance of the act is wrong.