单项选择题

在窗体上添加一个命令按钮(其Name属性为Command1),然后编写如下代码： Option Base 1 Private Sub Command1_Click() Dim a s = 0 a = Array(4, 3, 2, 1) j = 1 For i = 4 To 1 Step -1 s = s + a(i)* j j = j * 10 Next i Print s End Sub 运行上面的程序、单击命令按钮，其输出结果是