challenge: What are the two sources that the currently accepted taxonomy of Eubacteriaceae is based on?
  
  A. List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI)
  B. List of Prokaryotic names with Standing in Nomenclature (LPSN) and Encyclopedia Britannica
  C. National Center for Biotechnology Information (NCBI) and Wikipedia
  D. ScienceDirect and ResearchGate
  Answer: 