I need help with this multiple choice question.

1. A city ordinance empowers the police to order groups of loiterers to disperse if the officer reasonably believes that one of the loiterers is a gang member.

• Arguably, this statute is unconstitutionally vague on its face.
• This statute is a valid means of attempting to control gang violence.
• This statute can be challenged on the constitutional grounds of overbreadth.
• This statute is a valid use of the state's police powers