Even Though a Small Number of People Have Been Trained

Even though a small number of people have been trained academically as sociologists,we can all be described as "everyday sociologists" because:

A) sociology is a part of human nature.
B) our parents taught us to be sociologists even before they sent us to school.
C) we are all members of society and therefore we have a great deal of background knowledge about how society works.
D) sociologists are really just observers of conventional wisdom.