Q40,paper 2,D12.Given an empty stack, after performing push (1), push (2), Pop, push (3), push (4), Pop, Pop, push(5), Pop, what is the value of the top of the stack ?

(A) 4
(B) 3
(C) 2
(D) 1.
Answer© Explanation .
push (1), push (2), Pop, push (3), push (4).
Stack contents (1,2,3,4*)
After pop,pop
Stack contents (1,2*)
Push 5
Stack contents(125*)
Pop
Stack contents are (12*).
Top of stack is 2.