Which of the Following Findings Best Supports the Sociocultural Model

Which of the following findings best supports the sociocultural model of psychological disorders?

A) Genetic factors can influence the level of neurotransmitters and how their reception sites function.
B) Case studies like that of Little Albert show that phobias can be conditioned in children.
C) Disorders like schizophrenia are more common among people in lower socioeconomic classes.
D) Positron emission tomography PET) scans show that some brain regions function differently in people with mental disorders.