In which case are drivers of vehicles allowed to enter the zone marked by these road signs?

• 1If the vehicle belongs to a citizen who resides in the specified zone.
• 2If the vehicle belongs to a citizen who works in the specified zone.
• 3If the vehicle belongs to a citizen who serves enterprises or citizens in the specified zone.
• 4Answers 1 and 2.
• 5Answers 1, 2, and 3.