Consider a stack s that is implemented as a linked list struct. The stack s contains four nodes in the order of Node1, Node2, Node3, and Node4, where Node 1 is on the top of the stack. Fill in the blank spaces the correct answers. What does the top pointer topPrt of the stack point to after the execution of each statement bellow? Remember the statements execute in sequential order. s.Pop(); // The topPrt points to s.Pop(); // The topPrt points to s.Pop();// The topPrt points to s.Pop();// The topPrt points to