Permissiveness of Hormones Refers to the Fact That

Permissiveness of hormones refers to the fact that:

A) Hormones permit cellular processes to occur.
B) Hormones permit their target organs to function at the optimal rate.
C) In some instances an adequate amount of one hormone must be present for the full exertion of another hormone's effect, even though the first hormone itself does not directly elicit the response.
D) The nervous system through numerous neuroendocrine relationships permits the endocrine system to function.
E) The tropic hormones permit other endocrine glands to secrete their hormones.