In the Context of Justification Defenses, Which of the Following

In the context of justification defenses, which of the following statements best defines the term duty to retreat?

A) It is a defense against criminal liability in which the defendant asserts that circumstances required her or him to commit an illegal act.
B) It is the requirement that a person claiming self-defense prove that she or he first took reasonable steps to avoid the conflict that resulted in the use of deadly force.
C) It is a defense for criminal liability in which the defendant claims that the taking of intoxicants rendered her or him unable to form the requisite intent to commit a criminal act.
D) It is proof that a suspect was somewhere other than the scene of the crime at the time of the crime, typically offered to demonstrate that the suspect was not guilty of the crime.