Which Statement About Cortical Thinning and the Development of Schizophrenia

Which statement about cortical thinning and the development of schizophrenia is true?

A) Thinning of cortical gray matter is abnormal and only observed adolescents with schizophrenia.
B) Thinning of cortical gray matter is a normal part of adolescent brain development and when it doesn't occur there is an increased risk of an individual developing schizophrenia.
C) Although thinning of cortical gray matter is a normal part of adolescent brain development, in schizophrenia, gray matter is lost over smaller regions and at a slower pace.
D) Although thinning of cortical gray matter is a normal part of adolescent brain development, in schizophrenia, gray matter is lost over wider regions and at a faster pace.