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

    输出n                                              输出n

Next

C．n=1                                           D．以上三个都可以实现

    For j=1 To 4                                       题目要求的输出结果

     n=n*j

    Next

    输出n