When weather conditions in the Bahrain International Airport Control Zone (CTR) are below standard VMC, what are the minimum requirements for an air traffic controller to issue a Special VFR clearance to a fixed-wing aircraft?

1. Flight visibility of at least 800 m, ceiling not less than 300 ft, and aircraft equipped with autopilot
2. Flight visibility not less than 1,500 m, ceiling not less than 600 ft (180 m), clear of clouds, and with visual reference to the ground
3. Flight visibility of at least 5 km, ceiling at or above 1,500 ft, and continuous ILS guidance
4. Flight visibility not less than 3,000 m with no ceiling restriction provided the pilot operates under radar vectors