URGENT PLEASE HELP

If ΔUVW is dilated from point U by a scale factor of 2, which of the following equations is true about segment A prime B prime? Triangle UVW is shown with point A lying on side UV and point B lying on side UW. Line AB is perpendicular to side UW. segment A prime B prime = one half segment AB segment A prime B prime = two segment AB segment A prime B prime = segment AB segment A prime B prime = three segment AB