Which of the Following Forms of E-Commerce Has Created an Opportunity

Multiple Choice

Which of the following forms of e-commerce has created an opportunity for many people to make a living out of selling items on auction Web sites?

A) Business-to-business (B2B) e-commerce
B) Consumer-to-consumer (C2C) e-commerce
C) Consumer-to-business (C2B) e-commerce
D) Business-to-consumer (B2C) e-commerce