【加试题】设窗体上已经添加了command1、text1、label1对象，当文本框中输入8时下列代码段运行后的结果会是（   ）

Private Sub Command1_Click()

Dim s As Integer

Dim n As Integer

Dim i As Integer

n = Val(Text1.Text)

s = 1

For i = 2 To n

  s = s * i

Next i

Label1.Caption = Str(n) + "!=" + Str(s)

End Sub

A：程序有语法错误

B：出现“溢出”错误

C：8!= 4032

D：8!= 40320