The functions of zinc are:
(A) It is involved in the synthesis of indole acetic acid, metabolism of gibberellic acid and synthesis of RNA.
(B) It is a constituent of enzymes such as carbonic anhydrase (CA), alcoholic dehydrogenase and superoxide dismutase (SOD).
(C) Because of its preferential binding to sulphydryl group, Zn plays an important role in the stabilization and structural orientation of the membrane proteins.
(D) It influences translocation and transportation of P in plants. Under Zn-deficiency, poor translocation of P occurs, resulting in P-deficiency.
Choose the correct answer from the options given below: