Please answer accurately the nanomaterials multiple choice problem and will rate you highly for ACCURACY!

4. Which of the following measures must be applied in the working arens during handling of carbon nanotubes? a) Wet wiping methods b) Showers and hand-washing facilities c) Vacuum cleaning d) All of the above 5. Which factors are critical for the assessment of the health effect of carbon nanotubes and other nanoparticles, in general, on humans? (multiple answers may apply) a) Concentration of nanoparticles b) Age of workers c) Duration of exposure to nanoparticles d) Existing health status of workers e) Frequency of exposure 7. Safety during production of CNTs-thermoplasties composites mandates: a) High efficiency local exhaust b) Impervious gloves c) Containment of the source d) All of the above