In Neuropsychological Assessment, an Individual's Scores Are Best Compared Against

In neuropsychological assessment, an individual's scores are best compared against which of the following?

A) A large normative sample based on U.S. census data stratified for gender, age, race, and geographical region
B) A norm group consisting of individuals who have the same psychopathology as your client
C) A norm group of both healthy "normal" individuals and those suffering from a wide variety of mental illness
D) The estimated level of functioning of your individual before onset of the illness
E) None of these