In Their Research on Politicians' Use of Public Opinion Polling,Jacobs

In their research on politicians' use of public opinion polling,Jacobs and Shapiro found that

A) politicians track public opinion to make public policy.
B) politicians do not really track public opinion.
C) politicians track public opinion to help them craft public presentations and win public support for their parties.
D) politicians track public opinion to identify centrist positions that will have their broadest popular appeal when it comes to public policy.
E) politicians spend so much time tracking public opinion that they have little time to spend on actually leading the country.