1. On September 1, 2011, the state legislature passed a statute making it unlawful for a child under the age of twelve to ride a bicycle without wearing a bicycle helmet. The statute's effective date was November 1, 2011. On October 1, 2011, Scott, a ten-year-old boy was riding his bicycle without wearing a helmet.
   1. A. Scott was not violating any law because he was only ten years old.
   2. B. Scott was violating the helmet law as it had been enacted one month before his bike ride.
   3. C. Scott was not violating any law because the statute's effective date was November 1.
   4. D. Scott was violating the helmet law because such laws are usually given retroactive effect.