Which type of e$-$commerce is distinguished by the type of technology used in the transaction rather than by the nature of the market relationship?

A$)$ consumer$-$to$-$consumer $($C$2$C$)$

B$)$ social e$-$commerce

C$)$ mobile e$-$commerce

D$)$ business$-$to$-$business $($B$2$B$)$