challenge: What is a common time frame for the development of an acute inflammatory response in serum sickness-like reactions?
  
  A. 21-28 days after initiation of the offending agent
  B. 30-60 days after initiation of the offending agent
  C. 1-3 days after initiation of the offending agent
  D. 7-14 days after initiation of the offending agent
  Answer: 