Select the option which gives correct answer for the blanks in the statement given below.
(i) Addison's disease is caused due to deficiency of hormone produced by ____of adrenal gland.
(ii) ___is responsible for aggression in males.
(iii) Defiency of ____leads to production of large volume of dilute urine.
(iv) ____ can act as hormone as well as neurotransmitter.