Studies of Family Concordance Patterns for Schizophrenia Have Found

Studies of family concordance patterns for schizophrenia have found

A) such strong correspondence between gene-sharing and diagnosis that environmental factors have been ruled out.
B) little evidence of increased concordance with increased gene-sharing.
C) that the more genetically related you are to someone with schizophrenia, the greater your risk of the disorder.
D) strong correspondence between gene-sharing and diagnosis but only for males.