A. A person who fails to sign a notice of civil infraction is guilty of a misdemeanor.

B. Any person willfully violating his or her written and signed promise to respond to a notice of civil infraction is guilty of a misdemeanor, regardless of the disposition of the notice of civil infraction; PROVIDED, that a written promise to appear in court or a written promise to respond to a notice of civil infraction may be complied with by an appearance by counsel.

C. A person who willfully fails to pay a monetary penalty, restitution, or perform community service as required by a court under this Chapter may be found in contempt of court as provided in Chapter 7.21 RCW.