有如下VB程序段：

Private Sub Label1_Click()

  Dim a As Double, b As Single, c As Single

  a = Val(Text1．Text)

  b = Val(Text2．Text)

  c = ( a – b ) / Log(a)

  Label1．Caption = Str(c)

End Sub

能运行该段程序的事件过程名是（   ）

A：Text1_Click()

B：Text2_Click()

C：Label_Click()

D：Label1_Click()