Which of the Following Is True Regarding Zach's Defense That

Multiple Choice

Which of the following is true regarding Zach's defense that he thought he knew the law of Zeno because he had studied it some years before and that the laws under which he was arrested were new? (Assume the law of Zeno is the same as the U.S.on this issue.)

A) Rules change and Zach had a duty to stay current. It is not a defense that he studied the law at one time and that the laws at issue were new.
B) Zach is entitled to rely as a defense on the fact that he had studied the law at one time. Officials in Zeno were charged with publicizing any changes.
C) If Zach can prove that the laws at issue were passed within the last twelve months before he was arrested, he will get out of jail because there is a twelve month grace period for new laws.
D) If Zach can prove that the laws at issue were passed within the last six months before he was arrested, he will get out of jail because there is a six month grace period for new laws.
E) Zach cannot be prosecuted so long as he was not aware he was violating the law. He did not have the requisite intent to perform a criminal act regardless of whether the laws were new.