Which one of the following is not one of the major types of e-commerce?

Answer: Option A

Term Definition:
Types of e-commerce refer to the different models of online business transactions based on the parties involved. The major types include:
B2B (Business to Business): Transactions between businesses.
B2C (Business to Consumer): Transactions where businesses sell to consumers.
C2C (Consumer to Consumer): Transactions between individual consumers using a platform.
C2B (Consumer to Business): A model where individuals sell products or offer services to businesses.

Explanation:
While B2B, B2C, and C2C are widely recognized as major and traditional types of e-commerce, C2B is not considered one of the main types in many standard classifications.

In the C2B model, the consumer creates value and a business consumes that value. For example, a graphic designer (consumer) selling a logo design to a company (business).

Although C2B exists and is growing in relevance with platforms like freelancing websites, it is not typically included in the original or major categories of e-commerce used in foundational commerce studies.

Therefore, the correct answer is Option A: C2B because it is not traditionally classified as one of the major types of e-commerce.