challenge: Which of the following statements about 2,5-Dimethoxy-4-iodoamphetamine (DOI) is true according to the Standard for the Uniform Scheduling of Medicines and Poisons (SUSMP) of Australia?
  
  A. DOI is not listed as a prohibited substance in Australia
  B. DOI is only available by prescription in Australia
  C. DOI is classified as a prohibited substance
  D. DOI is legal for recreational use in Australia
  Answer: 