Which statement regarding B$2$B $($business$-$to$-$business$)$ marketing is not correct?

a$.$ B$2$B marketing rarely involves building relationships with clients.

b$.$ B$2$B marketing often targets a smaller and more specific audience compared to B$2$C marketing.

c$.$ B$2$B marketing typically involves longer sales cycles compared to B$2$C marketing.

d$.$ B$2$B marketing focuses on selling products or services to other businesses.