During a major demolition and renovation project within a burn unit, a contractor is inspecting the work area for compliance with the infection control plan. Which of the following measures are required by the Risk Assessment Matrix?

A. The construction debris is being removed in open waste containers, and the work area is in negative pressure.

B. Critical barriers made of plastic are in place, and the work area has HEPA-equipped air filtration units.

C. Anterooms are in place, and the HVAC system in the work area is isolated.

D. Positive pressure is maintained, and there are dust mats at the entrance to the work area.