窗体上添加有3个命令按钮，分别命名为Command1、Command2和Command3。编写Command1的单击事件过程，

窗体上添加有3个命令按钮，分别命名为Command1、Command2和Command3。编写Command1的单击事件过程，完成的功能为，当单击按钮Command1时，按钮Command2可用，按钮Command3不可见。以下正确的是

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

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

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

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