Asbestos Respirator Cartridges

Which of the following safety warnings must be followed when handling asbestos dust?
A. Compressed air and/or brushes must not be used to clean asbestos from brake components.
B. Asbestos dust must be placed in a sealed and labeled bag for disposal.
C. A high efficiency cartridge or air line respirator must be worn to avoid breathing asbestos dust.
D. All of the above
Are you asking questions while taking a test????
The answer is D. All of the above.