Research Regarding a Genetic Contribution to Conduct Disorders

Research regarding a genetic contribution to conduct disorders

A) suggests little genetic influence on conduct disorder in children.
B) suggests that estimates of genetic influence for conduct-disordered behavior are consistent across different sources of information and different informants.
C) suggests that childhood-onset antisocial behavior is more likely to be genetically determined than is the adolescent onset type.
D) rules out environmental influences in some types of conduct disorder.