Concerned with the expensive disposal their hazardous wastes, a company learns that it can purchase another chemical that will neutralize the company's hazardous wastes into a nontoxic form. The strategy used by this company is most consistent with which of the following hazardous waste disposal system methods?

• A.  secure landfill
• B.  deep-well injection
• C.  on-site surface impoundment
• D.  best-demonstrated available technology