What Is the Most Likely Relationship Between Genetics and Eating

Multiple Choice

 What is the most likely relationship between genetics and eating disorders such as anorexia nervosa and bulimia nervosa?

A) There is no evidence for a genetic contribution to eating disorders.
B) Genes probably contribute a great deal to bulimia nervosa but not to anorexia nervosa.
C) Some studies have identified a genetic contribution, but others have found no evidence of such a factor.
D) Eating disorders can be accounted for almost entirely by genetic influences.