In the Digital Era, Agenda-Setting Theory Does Not Measure Up

In the digital era, agenda-setting theory does not measure up to its claims because:

A) the causal link between the media's agendas and the public's agendas has been called into question.
B) it is largely based on qualitative data as opposed to well-grounded quantifiable data.
C) the role of interest aggregations has been underrepresented.
D) modern websites and apps change the structure of gatekeeping and allow the public to set its own agenda.