A toy retailer attends a toy convention and solidifies a relationship with a new yo$-$yo manufacturer. The toy retailer requires a deep discount on the first large order in order to solidify the new relationship. This is an example of marketing with the:

a$)$ business to consumer $($B$2$C$)$ emphasis

b$)$ dual emphasis

c$)$ business$-$to$-$business $($B$2$B$)$ emphasis