Arrange the following in their decreasing order of species. Fishes, Birds, Reptiles, Amphibian
(a) Fishes $>$ Birds $>$ Reptiles $>$ Amphibian
(b) Fishes $>$ Reptiles $>$ Birds $>$ Amphibian
(c) Reptiles $>$ Fishes $>$ Birds $>$ Amphibian
(d) Amphibian $>$ Fishes $>$ Birds $>$ Reptiles