UGC NET Paper 1 GA 2018 Dec Solved Paper

Given below are two premises (a and b). Four conclusions are drawn from them. Select the code that states validly drawn conclusion (s). [Taking Premises individually or jointly].
Premises: (a) All mammals are warm-blooded animals.
(b) No lizards are warm-blooded animals.
Conclusions: (i) No lizards are mammals.
(ii) Some lizards are not mammals.
(iii) No warm-blooded animals are lizards.
(iv) All warm-blooded animals are mammals.