Regarding the Genetic Potential for Developing Schizophrenia,which of the Following

Regarding the genetic potential for developing schizophrenia,which of the following statements is FALSE?

A) Schizophrenia is more common among close relatives and tends to run in families.
B) There is a case on record of four identical quadruplets all developing schizophrenia.
C) The younger a man is when he fathers a child, the more likely it is that his child will develop schizophrenia because of genetic mutations in immature male reproductive cells.
D) Researchers are now beginning to search for specific genes related to schizophrenia.