窗体中有3个命令按钮，分别命名为Command1、Command2和Command3

题目：

窗体中有3个命令按钮，分别命名为Command1、Command2和Command3。当单击Command1按钮时，Command2按钮变为可用，Command3按钮变为不可见。下列Command1的单击事件过程中，正确的是

A．Private sub Command 1_Click() Command2.Visible=TrueCommand3.Visible=False End Sub

B．Private sub Command1_Click()Command2.Enable=TrueCommand3.Enable=False End Sub

C．Private sub Command1_Click()Command2.Enable=TrueCommand3.Visible=False End Sub

D．Private sub Command1_Click()Command2.Visible=TrueCommand3.Enable=False End Sub