Matt Was Passionate About Abercrombie & Fitch

Matt was passionate about Abercrombie & Fitch. It was the only place he'd buy his clothes. If anyone asked him about clothes, he would talk for what seemed like hours about why he only shopped there. From a strictly marketing perspective, this word of mouth is an element of

A) social marketing.
B) brand loyalty.
C) self-actualization.
D) motivation.
E) brand extension.
Matt's word of mouth behavior is an outcome of his brand loyalty.