challenge: What is the name of the free-radical polymerization technique developed by David Henry Solomon?
  
  A. Nitroxide Mediated Polymerization (NMP)
  B. Reversible Addition-Fragmentation Chain Transfer (RAFT)
  C. Single Electron Transfer Living Radical Polymerization (SET-LRP)
  D. Atom Transfer Radical Polymerization (ATRP)
  Answer: 