Choose the odd one out from each series
(a) The glands - thyroid, adrenal, pituitary, prostate...........................
(b) The conditions - cretinism, myxoedema, goitre, scurvy....................
(c) The hormones - insulin, glucagon, cretinism, thyroxine......................
(d) The hormonal sources - adrenal cortex, adrenal medulla, cortisone, pituitary...............................
(a) Prostate
(b) Scurvy
(c) Cretinism
(d) Cortisone