单项选择题

窗体中有3个按钮Command1、Command2和Command3，该程序的功能是当单击按钮Command1时，按钮2可用，按钮3不可见，正确的程序是
Private Sub Command1_Click()
Command2. Visible=False
Command3. Enabled=True
End Sub

Private Sub Commnd1_Click()
Command2. Visible=False
Command3. Enabled=False
End Sub

Private Sub Command1_Click()
Command2. Enabled=True
Command3. Visible=False
End Sub
Private Sub Command1_Click()
Command2. Visible=True
Command3. Enabled=True
End Sub