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GATE | GATE 2017 MOCK II | Question 22

Linked Questions 22-23
Stack A has the entries as following sequence a, b, c (with ‘a’ on top), stack B is empty, as shown in the diagram below. stack An entry popped out of stack A can be printed or pushed to stack B. An entry popped out of stack B can only be printed. In this arrangement which of the following permutation of a, b, c are not possible to print?
(i)   bac
(ii)  bca
(iii) cab
(iv)  abc


(i), (ii) and (iii)


(iv) Only


(iii) Only


(ii) and (iii) Only


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