Basic buffer system and an acidic buffer system

Question

Which characteristic defines the main difference between a basic buffer system and an acidic buffer system?

1. A basic buffer system uses more base than acid per liter.
2. A basic buffer system is a solution that can maintain an acidic pH when more acid or base is added.
3. A basic buffer system maintains a steady basic pH regardless of how much acid or base is added.
4. A basic buffer system is a solution that can maintain a basic pH when more acid or base is added.