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MCQ

Using Pop (S1,Item) ,Push(S1, Item), Getlist(Item), Pop(S2,Item), and the variables S1,S2(stacks with Top1 and Top2) and Item and given the input file: A,B,C,D,E,F Which stack are possible?

No possible stacks with A,B,C,D,E and F

All possible stacks with A,B,C,D,E and F

Twice as many stacks as can be produced with S1 alone

Exact and only those stacks which can be produced with S1 alone

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