challenge: What percentage of risankizumab treated patients achieved a 75%, 90%, and 100% decrease in the Psoriasis Area and Severity Index (PASI) at week 12 of treatment?
  
  A. 90%, 100%, and 50%
  B. 80%, 70%, and 40%
  C. 87%, 58%, and 16%
  D. 75%, 90%, and 100%
  Answer: 