challenge: What type of documents may be produced when different systems using DISOSS for document exchange and distribution have varying implementations of Document Content Architecture (DCA)?
  
  A. Only revisable form text (RFT) documents
  B. Neither final form (FFT) documents nor revisable form text (RFT) documents
  C. Either final form (FFT) documents or revisable form text (RFT) documents
  D. Only final form (FFT) documents
  Answer: 