Consider these functions:push() : push an element into the stackpop() – McqOptions

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1.	Consider these functions:push() : push an element into the stackpop() : pop the top-of-the-stack elementtop() : returns the item stored in top-of-the-stack-nodeWhat will be the output after performing these sequence of operationspush(20);push(4);top();pop();pop();pop();push(5);top();
A.	20
B.	4
C.	Stack underflow
D.	5
Answer» E.

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