UGC NET Paper 1 GA 2016 Aug Solved Paper

Given below are two premises, with four conclusions drawn from them (taking singly or together); which conclusions are validly drawn?
Select the correct answer from the codes given below:
Premises :
(i) All bats are mammals.
(ii) Birds are not bats.
Conclusions :
(A) Birds are not mammals.
(B) Bats are not birds.
(C) All mammals are bats.
(D) Some mammals are bats.