Question: If the sequence of operations are performed on a stack, the sequence of popped out values are ? push(1) push(2) pop push(1) push(2) pop pop

If the sequence of operations are performed on a stack, the

If the sequence of operations are performed on a stack, the sequence of popped out values are ? push(1) push(2) pop push(1) push(2) pop pop pop push(2) pop O a. 21222 Ob. 22112 O c. 212 21 O d. 221 22

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