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()
B.private sub Command1_Click() Command2.Enable=true Command3.Enable=false
C.private sub Command1_Click() Command2.Enable=true Command3.Visible=false
D.private sub Command1_Click() Command2.Visible=True Command3.Enable=False