Which of the following is true of lewdness and sex offenses? A. Lewdness refers to some thing that is obscene, while pornography refers to behavior that is obscene. B. Under common law, it is not a crime for persons to intentionally expose their private parts in a public place. C. It is not a crime to knowingly or unknowingly receive through the mail a visual depiction involving a minor engaging in sexually explicit conduct. D. Lewd or lascivious behavior consists of intimate activity by a single individual where such activity is intended to be sexually arousing