单选题Which of the following would be the safest environmental condition for working on multiple systems at one time？（）AA tiled room with anti-static mats and wrist straps.BA clean， carpeted room with anti-static mats and wrist straps.CA tiled room in a warehouse with outside ventilation.DA clean， carpeted room with air purifiers and dehumidifiers.
单选题
Which of the following would be the safest environmental condition for working on multiple systems at one time？（）
A
A tiled room with anti-static mats and wrist straps.
B
A clean， carpeted room with anti-static mats and wrist straps.
C
A tiled room in a warehouse with outside ventilation.
D
A clean， carpeted room with air purifiers and dehumidifiers.
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