Search engine optimization relates to which advertising tactic?

A. Paying search engines to list your practice first when the practice specialty is searched
B. Using keywords in hopes of search engines picking up your practice when these words are searched for
C. Use of a billboard in high-traffic areas
D. Use of moving billboards (e.g., on the side of a bus)

B.Using keywords in hopes of search engines picking up your practice when these words are searched for