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Suppose that items A, B, C, D, E, F, G and H are pushed, in that order, onto an initially empty stack S. S is then popped four times; as each item is popped off, it is inserted into an initially empty queue. Three items are then removed from the queue and are pushed into the stack S again. What is the next item that will be popped from the stack S? A. item A B. item B C. item C D. item D E. item E F. item F G. item G H. item H