challenge: According to the U.S. Military connector specifications, what are the alternatives to using connectors defined by military specifications (MIL-C or MIL-DTL)?
  
  A. Either designated performance specifications (MIL-PRF) issued by the Department of Defense (DoD) or Commercial Item Descriptions (CID) issued by the General Services Administration (GSA), or standards developed by Non-Government Standards Bodies (NGSBs)
  B. Only Commercial Item Descriptions (CID) issued by the General Services Administration (GSA)
  C. Only designated performance specifications (MIL-PRF) issued by the Department of Defense (DoD)
  D. Neither of the above, only military specifications (MIL-C or MIL-DTL) are allowed
  Answer: 