Which of the Following Is True for Control of a Mercury

Which of the following is true for control of a mercury spill?

A) Mercury spill kits are required only for offices that use free rather than precapsulated mercury;thus mercury spill kits do not have to be available in all dental offices that use amalgam for restorations.
B) Mercury can be absorbed through the skin,but as a metal it is very dense,and there is no risk of inhalation of mercury vapors.
C) The spill kit for small amounts of mercury should contain a handheld vacuum cleaner.
D) A mask and utility-type gloves should be worn whenever cleaning a mercury spill.