Research on the Genetic Predisposition Toward Schizophrenia Has Indicated That

Research on the genetic predisposition toward schizophrenia has indicated that:

A) among identical twins, when one twin develops schizophrenia, the other twin has an 80% chance of developing schizophrenia.
B) children with one schizophrenic parent have a lifetime risk of developing schizophrenia of about 35%, compared to a risk in the general population of about 1-2%.
C) children with two schizophrenic parents have a lifetime risk of developing schizophrenia of about 40%, compared to a risk in the general population of about 1-2%.
D) the risk of schizophrenia for the unaffected twin when an identical twins has schizophrenia is greatly reduced if the twins have been reared apart.