Givenbelow is the representation of the extent of global diversity of invertebrates. What groups the four portions (A-D) represent respectively ?
A B C D
(a) insects Crustaceans Other animal Molluscs
(b) Insects Other animal groups Crustaceans Molluscs
(c) Molluscs Other animal groups Crustaceans Insects
(d) Insects Molluscs Crustaceans Other animal groups
(b) NCERT XII, BIODIVERSITY AND CONSERVATION, PAGE NO. 260, FIG. 15.1