RRB NTPC CBT I 29 Dec 2020 Shift 1 Paper

You are given 3 sets of arguments, each containing three sentences. Select the set(s) in which the third statement is a logical conclusion of the first two statements.
A. (i) All shops are showrooms.
(ii) No showroom is a mall.
(iii) All shops are not malls.
B (i) No Japanese can dance.
(ii) All Americans are books.
(iii) Americans and Japanese can dance.
C. (i) No P is Q.
(ii) No Q is R.
(iii) No P is R.