After Typing the Words "Museums," "Public Transportation," and "Apartments for Rent

After typing the words "museums," "public transportation," and "apartments for rent" into her browser, ads for apartment complexes located in or around the museum district started popping up on Ana Lucia's various social media. This was likely a function of

A) a paid search.
B) geotracking.
C) bots.
D) a sponsorship.
E) inbound marketing.