Which of the Following Statements Is True

Which of the following statements is true?

A) Strong evidence for a genetic contribution to schizophrenia exists and fully explains the connection between genetics and the disorder
B) All people with schizophrenia show structural and functional abnormalities in the brain including high frontal activity and enlarged ventricles
C) Prenatal and birth difficulties have been implicated as contributing factors to the development of schizophrenia
D) Prenatal exposure to influenza virus during the third trimester of gestation increases the risk of developing schizophrenia