Which statement correctly describes the biosafety level 4 (BSL-4) laboratory?

• A. BSL-4 provides maximum containment for the most dangerous/exotic pathogens with specialized PPE and facilities.
• B. BSL-4 is a foundational level for teaching labs.
• C. BSL-4 is only used for plant pathogens.
• D. BSL-4 requires no containment.

Answer: (A)