A. When the juvenile court sentences an adult who has committed, before attaining the age of 18, an offense that would be a crime if committed by an adult, the court may impose, for each offense, the penalties that are authorized to be imposed on adults for such violations, not to exceed the punishment for a Class 1 misdemeanor, provided that the total jail sentence imposed shall not exceed 36 continuous months and the total fine shall not exceed $2,500 or the court may order a disposition as provided in subdivision A 4, 5, 7, 11, 12, 14, or 17 and subsection B of § 16.1-278.8.
B. A person sentenced pursuant to this section shall earn good time credit at the rate of one day for each one day served, including all days served while confined in jail or secured detention prior to conviction and sentencing, in which the person has not violated the written rules and regulations of the jail.