In Online Sexual Solicitation Between a Child and a Predator

In online sexual solicitation between a child and a predator, what role does physical contact play?

A) To convict a predator, there must be evidence of unwanted physical contact.
B) For a crime to have occurred, sexual contact must have occurred.
C) Physical contact does not have to occur for a crime to occur.
D) To arrest a predator, there must be evidence of physical contact.