B. Prior to a transfer hearing pursuant to subsection A of § 16.1-269.1 or a preliminary hearing pursuant to subsection C of § 16.1-269.1, a study and report to the court, in writing, relevant to the factors set out in subdivision A 4 of § 16.1-269.1, as well as an assessment of any affiliation with a criminal street gang as defined in § 18.2-46.1, shall be made by the probation services or other qualified agency designated by the court. Such report shall include any relevant information supporting an allegation that the juvenile was a victim of felonious criminal sexual assault in violation of Article 7 (§ 18.2-61 et seq.) of Chapter 4 of Title 18.2 or trafficking in violation of Article 3 (§ 18.2-344 et seq.) of Chapter 8 of Title 18.2 by the alleged victim. It is the intent of the General Assembly that these juveniles be viewed as victims and provided treatment and services in the juvenile system. Upon motion of the attorney for the Commonwealth for a transfer hearing pursuant to subsection A of § 16.1-269.1, the attorney for the Commonwealth shall provide notice to the designated probation services or other qualified agency of the need for a transfer report. Counsel for the juvenile and the attorney for the Commonwealth shall have full access to the study and report and any other report or data concerning the juvenile which are available to the court. The court shall not consider the report until a finding has been made concerning probable cause. If the court so orders, the study and report may be expanded to include matters provided for in § 16.1-273, whereupon it may also serve as the report required by this subsection, but on the condition that it will not be submitted to the judge who will preside at any subsequent hearings except as provided for by law.