Business-to-business applies to businesses buying from and selling to each other over the internet. Thus the correct answer is C.
Business is referred to as an economic activity that helps to take place with the help of trade which involves buying and selling goods in exchange for money. The objective of business is the Maximization of Profit.
Business to business applies to business that buys and sells to each other over the internet. It includes E-commerce business which takes place with the help of online media.
Therefore, option C is appropriate.
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