question: What are the main criteria considered when developing UAV (Unmanned Aerial Vehicle) regulations? option 1: Applicability, operational limitations, administrative procedures, technical requirements, and implementation of ethical constraints. option 2: UAV type, spectrum, altitude, and speed of UAVs. option 3: Maximum altitude, minimum distance to people, and minimum distance to airport. option 4: UAV capabilities, their flying altitudes, and altitude restrictions for LAP-drones. option 5: Privacy, public safety, security, and collision avoidance. 