Which of the Following Are TRUE Statements Regarding Animal Endocrine

Which of the following are TRUE statements regarding animal endocrine systems?

A) Animal endocrine systems transmit chemical signals to coordinate the physiological activity of different organ systems within the animal's body.
B) Animal endocrine systems transmit chemical signals to the environment that can be sensed by other members of the same species, affecting their behavior.
C) Hormones may share common chemical structures in diverse animals but often evolve new functional roles.
D) Steroid hormones evolve by changing their structures through natural selection.
E) Steroid hormones evolve through changes in the expression of their receptors within different cells through natural selection.