With Regard to the Biological Influences of Anorexia and Bulimia,the

With regard to the biological influences of anorexia and bulimia,the most accurate statement is

A) anorexia and bulimia are culturally determined and not biologically influenced.
B) the biological influences of anorexia and bulimia have not been studied.
C) although the studies are still limited, there appears to be some biological influence in the development of anorexia and bulimia.
D) although the studies are limited, there does appear to be a large biological influence for anorexia and a very small biological influence for bulimia.