Choice "C" is correct. Business to business (B2B) transactions typically occur through any number of different networks including the Internet, private corporate intranets, extranets, or Electronic Data Interchange (EDI) arrangements.
Choice "b" is incorrect. B2B is not required to take place only through a single network such a private Value Added Network (VAN) established to effect Electronic Data Interchange (EDI).
Choice "a" is incorrect. B2B is not required to take place only through a single network such as an intranet.
Choice "d" is incorrect. Confirmation of business transactions typically occurs online and does not require or generally even use hard copy confirmations mailed through the United States Postal Service.
