What is correct to say about the hormone action in humans?
(a) Glucagon is secreted by -cells of islets of Langerhans and stimulates glycogenolysis
(b) Secretion of thymosine is stimulated with ageing.
(c) In females, FSH first binds with specific receptors on ovarian cell membrane
(d) FSH stimulates the secretion of oestrogen and progesterone