If you implement a stack using a linked list, this pseudocode:

function g()
if(top!=NULL)
top=top-data

Question

If you implement a stack using a linked list, this pseudocode:  
 
 function g() 
      if(top!=NULL)  
             top=top->data

Answer

corresponds to the pop operation

Answer

corresponds to the is empty operation

Answer

corresponds to the push operation

Answer

none of the other answers

Answer

that is not a stack operation

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