单项选择题

在窗体上添加一个命令按钮，名为Command1，然后为该命令按钮编写如下事件过程，该过程执行结果为______。
Option Base 1
Private Sub Cemmand1_Click()
Dim a As Variant
a = Array(1, 2, 3, 4)
j = 1
for i = 4 To 1 Step - 1
s = s+ a(i)* j
j= j* 10
Next i
Print s
End Sub

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