What Is a Case Control Study

What is a case control study?

A) A study in which individuals with an illness are compared to individuals with a similar illness
B) A study in which one individual is assessed to identify the factors responsible for the illness
C) A study in which two groups with similar illnesses are compared to a third group with a different illness
D) A study in which individuals with an illness are compared to another group who does not have the illness
E) A study in which individuals with an illness are assessed before diagnosis of the illness, and again after receiving treatment for the illness