Which of the following statements is true of schizophrenia with regard to prenatal problems?

A) Malnourishment of the mother does not affect the fetus.
B) Children with very low birth weight have reduced risks of schizophrenia.
C) Damage to the fetus may occur if the mother gets the flu virus during the first four months of prenatal development.
D) Maternal diabetes and emotional stress do not contribute to schizophrenia.