Which of the Following Statements Is True About Electronic Commerce

Which of the following statements is true about electronic commerce?

A) Business-to-business electronic commerce is by far the largest form of electronic commerce in terms of revenues.
B) Electronic commerce is limited to transactions between businesses and consumers.
C) Electronic commerce between businesses and their employees is impossible.
D) All forms of electronic commerce involve business firms.
E) Consumer-to-consumer electronic commerce is a complete reversal of the traditional business-to-consumer electronic commerce.