What social media channels do B2C marketers use — and how does this differ from what B2B marketers use?

Most of the social medias are  concentrated and targeted on Individuals though the media are effectively used for advertisement purpose.  B2C marketing is thus become more effective.

I don't consider advertisements in social medias have much effect for B2B Marketing. 

am sorry ,, digital marketing is not my area of interest,,,,,, good day