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A．For i=1 To 4                                   B．For i=1 To 4

    n=1                                               For j=1 To i

    For j=1 To I                                              n=1

        n=n*j                                               n=n*j

    Next

    輸出n                                              輸出n

Next

C．n=1                                           D．以上三個都可以實現

    For j=1 To 4                                       題目要求的輸出結果

     n=n*j

    Next

    輸出n