Find out the incorrect matching:
(a) Reptiles
Chelone, Testudo, Chameleon
(b) Aves
$-$
Psittacula, Aptenodytes, Neophron
$\begin{array}{ll}\text { (c) Mammals } & - & \text { Elephas, Rattus, Delphinus }\end{array}$
(d) Amphibian Naja, bangarus, Calotes